Destiny 2 is far from perfect, but it's a still a solid experience.

[Gameplay, Grind, Mechanics & Bugs]
Gameplay is rather fulfilling; The way the guns and abilities "feel" is too good to pass up on.
The overall difficulty varies; Campaign content is a breeze, but many end-game activities have exceedingly high difficulty options available.
PvP is a similar situation but it's generally left a bit behind when it comes to updates. There's a PvEvP mode (Gambit) but it's almost entirely left behind in terms of updates.
Part of what allows you to do those high-level end game activities will be the gear you get along the way. Grinding for better gear is part of the standard gameplay loop. (Run Activities, get armor/guns, run harder activities, get better armor/guns, etc...)
The grind also varies depending on what you plan to go for. Most of the end-game options allow for lightly grinded sets. Activities like the Legend Ordeal & Grandmaster Nightfalls require dedicated setups and skill.
As with most games, there are a few bugs you (may) run into. They're not particularly game-breaking in most situations, and most of the glitches players find (and exploit) get patched; How fast they get patched depends on the severity of the glitch.
Something that can't be ignored however is the Bungie API. The API is a godsend as it allows for things like looking up post-game stats from a PvP game, to organizing and moving your gear between characters. Maybe the shotgun you really need is in the vault... You could just use an app on your phone or a browser app to move it without having to go in-game to a social space and manually move the weapon yourself.
It's a massive time saver that isn't vital to playing the game, but is a huge Quality of Life feature that all other games in this category lack.

[Graphics, Audio, Performance & Price]
Graphically, this game is truly beautiful. The skyboxes, and many of the environments are simply works of art. Particle effects and lighting are great as well.
As always, the audio quality is superb with Bungie. It's a "AAA" Voice Actor lineup that performed their lines phenomenally. (However, not all lines are actually good in the game.)
Music and ambient audio is very well done. "Spooky" areas have appropriate music and many areas have a perfect set of music to accompany what you're doing.
The game runs somewhat smoothly on average hardware, and scales well with better components. Ex: Vega 64 Crossfire (AFR Friendly) can pull exceedingly high performance with max settings at 1440p.
Base Game is free, not much to be said about that. Comes with one main campaign, and two smaller campaigns with plenty of side quests and other secrets.
There are two expansions available to purchase: Forsaken (Year 2 Content | Forsaken/Black Armory/Gambit Prime/Reckoning/Menagerie) and Shadowkeep (Year 3 Content | Shadowkeep & Current Seasonal Content)
If the base game catches your fancy, maybe look into Shadowkeep & maybe the upcoming Year 4 content to eventually come out.

Final Thoughts:
The game is mostly good. While Bungie has decided to opt-in for more FOMO strategies as of Year 3, the game is still good to play, just in moderation.
Current seasonal content (Season 10 as of this review) is very lackluster in most categories. Audio, Graphics and Story aside, the actual additions to gameplay were rather weak and have been on a steady decline since the release of Shadowkeep.
In the end, there's plenty to do, but not everything is viable. Play for fun, play with friends, play to make friends. The Reddit Discord Server (r/DtG) & D2 PC LFG Servers are some of the best servers to find people to play with. (You just need to make that first step towards putting yourself out there.)

Destiny 2 is far from perfect, but it's a still a solid experience. [Gameplay, Grind, Mechanics & Bugs] Gameplay is rather fulfilling; The way the guns and abilities "feel" is too good to pass up on. The overall difficulty varies; Campaign content is a breeze, but many end-game activities have exceedingly high difficulty options available. PvP is a similar situation but it's generally left a bit behind when it comes to updates. There's a PvEvP mode (Gambit) but it's almost entirely left behind in terms of updates. Part of what allows you to do those high-level end game activities will be the gear you get along the way. Grinding for better gear is part of the standard gameplay loop. (Run Activities, get armor/guns, run harder activities, get better armor/guns, etc...) The grind also varies depending on what you plan to go for. Most of the end-game options allow for lightly grinded sets. Activities like the Legend Ordeal & Grandmaster Nightfalls require dedicated setups and skill. As with most games, there are a few bugs you (may) run into. They're not particularly game-breaking in most situations, and most of the glitches players find (and exploit) get patched; How fast they get patched depends on the severity of the glitch. Something that can't be ignored however is the Bungie API. The API is a godsend as it allows for things like looking up post-game stats from a PvP game, to organizing and moving your gear between characters. Maybe the shotgun you really need is in the vault... You could just use an app on your phone or a browser app to move it without having to go in-game to a social space and manually move the weapon yourself. It's a massive time saver that isn't vital to playing the game, but is a huge Quality of Life feature that all other games in this category lack. [Graphics, Audio, Performance & Price] Graphically, this game is truly beautiful. The skyboxes, and many of the environments are simply works of art. Particle effects and lighting are great as well. As always, the audio quality is superb with Bungie. It's a "AAA" Voice Actor lineup that performed their lines phenomenally. (However, not all lines are actually good in the game.) Music and ambient audio is very well done. "Spooky" areas have appropriate music and many areas have a perfect set of music to accompany what you're doing. The game runs somewhat smoothly on average hardware, and scales well with better components. Ex: Vega 64 Crossfire (AFR Friendly) can pull exceedingly high performance with max settings at 1440p. Base Game is free, not much to be said about that. Comes with one main campaign, and two smaller campaigns with plenty of side quests and other secrets. There are two expansions available to purchase: Forsaken (Year 2 Content | Forsaken/Black Armory/Gambit Prime/Reckoning/Menagerie) and Shadowkeep (Year 3 Content | Shadowkeep & Current Seasonal Content) If the base game catches your fancy, maybe look into Shadowkeep & maybe the upcoming Year 4 content to eventually come out. Final Thoughts: The game is mostly good. While Bungie has decided to opt-in for more FOMO strategies as of Year 3, the game is still good to play, just in moderation. Current seasonal content (Season 10 as of this review) is very lackluster in most categories. Audio, Graphics and Story aside, the actual additions to gameplay were rather weak and have been on a steady decline since the release of Shadowkeep. In the end, there's plenty to do, but not everything is viable. Play for fun, play with friends, play to make friends. The Reddit Discord Server (r/DtG) & D2 PC LFG Servers are some of the best servers to find people to play with. (You just need to make that first step towards putting yourself out there.)