Cause we're bored and liked the idea so why the hell not.

Bushido (武士道, "the way of the warrior") is a Japanese term for the samurai way of life, loosely analogous to the concept of chivalry in Europe. Just like the knights of Europe, the samurai had a code to live by that was also based in a moral way of life.

The "way" itself originates from the samurai moral values, most commonly stressing some combination of frugality, loyalty, martial arts mastery, and honor until death. Born from Neo-Confucianism during times of peace in Tokugawa Japan and following Confucian texts, Bushido was also influenced by Shinto and Zen Buddhism, allowing the violent existence of the samurai to be tempered by wisdom and serenity.