I'm not sure I'll ever understand fair weather fans, or fans that try to use their fanliness as leverage. You don't like a couple of champions they picked. That's really unfortunate_ for you_, and indicative of your level of emotional development, but far less so for them. You're a terrible fan. Bye, Felicia.
It's one thing to hate the champions (or the "game"), and it's totally fine and understandable. It's a different and completely uncool thing to hate the players, though. They're professionals, and they're there to win. Don't impose impossibly fickle and pointlessly limiting ultimatums. (If you play x, y, z champions I don't like, I will hate you! Oh, also, I don't want you playing this list of champions, either...)
Udyr and Shaco both have such low/nearly nonexistent pick rates in the competitive scene that it's really, really refreshing to see them there. Frankly, I'm more tired of everyone following the meta and picking Sej, Vi, Jarvan, and Lee on rotation -- though it is in place for good reason: it fuckin' works really well -- but that's what they have to do to stay competitive. Even if you personally hate playing against something, as a good fan it's on you to empathize with the pros and say, "even though I really dislike that lame assturd of a champion, I can totally understand the reasoning behind picking it."
Zed, Lissandra, Lulu, Sion, Lucian, Jinx, Vayne, Graves, Corki, Ezrael, Sivir, Thresh, Lee Sin, Maokai, Rumble, Jarvan, Sejuani, Vi, Nidalee, Nautilus, Morgana, Janna, Ahri, Hecarim, Urgot... these 25 champions make up probably 90-95% of recent professional picks/bans, but are only about 1/5 of the 124 champions in the game. It's really exciting to see a team throw caution to the wind and try out something that no one is expecting, regardless of whether it is successful or not. It's far less exciting and dramatic to see people winning with the same cookie-cutter strategy day in and day out, week after week.
So, again, be a fan, or don't. Care, or don't. Grow, or don't. No one is sad to see a "fan" like you go.