I am a support main of 6 years
After realizing that no matter what i do, i can't fix bad positioning, i cant teach someone how to manipulate minion waves and i can't stop people from rushing Greaves. I started playing ADC, I played 5 games with Jhin and it was the most fun I've ever had playing League.
People who say BUT A SUPPORT CAN CARRY THE BOT LANE!!#(@$@#$@# - half true, a good support can carry a bad adc NOT a bad player.