Let's talk about Twitch (and ADCs in general)
So last season I mained Twitch (120k, so by 'mained' I mean he was my default pick, not my one-trick). And I had a lot of fun using him, I loved his personality and playstyle.
However this season, he feels... bad. I've barely played him since the 'rework' and it just isn't fun. I know right now he's considered very strong but something just isn't the same. He's just as bland as any other ADC now. Buy BF Hurricane I.E. Shiv LDR. Shoot people. Before it felt like you could pull off a lot of cheese (no pun intended), and it was fun actually being sneaky. But with the change to Q it's just another attack speed steroid now. He has to build the boring ass standard ADC build instead of his unique YGB > Hurricane build.
Bringing me to my point. ADC IS BORING. Spend 30 minutes farming the same 4 items every game. Be the sacrificial lamb to the Hecarim/Lee Sin. Maybe kill a few people or a tower once in a while. Rinse and repeat. I dont have fun unless I'm playing Jhin or Draven now because they actually have a unique skillset and item path.
If we compare ADCs to Mages, Mages can diversify their rush items by a huge amount. Want burst? Ludens. Mana Issues/Spam? Morello. Getting bursted? Zhonyas. Need CC? Rylai's. Against another Mage? Abyssal. Already have CC? Liandy's.
TL;DR Used to main Twitch but don't anymore because Twitch and basically all other ADCs are boring due to lack of itemization and binary playstyle