It's not easy being a support!
- always buys and fly the courier
- dedicates money for wards and healing items
- gives last hit to carries
- always pays attention to teammates hp/mp
- risks life to explore and ward
- easy prey
- sometimes initiate and sacrifice to keep the carry alive

and in the end...

- always blamed
- being yelled for having low kills
- humiliated for not having items
- no commendation
- being labeled as noobs
- reported most of the time
- not appreciated

NO WONDER NOBODY WANTS TO PICK SUPPORT!