I wish I could get into TF2 like I can CS:S, COD4, L4D, and similar online FPS's. Something about the cartoony graphics and fast-paced action just turns me off.
I've put about 10-20 hours into it just trying to warm up to it, but it just doesn't feel right. It looks like a great game and I love the versatility of the various classes, the use of teamwork, and especially the constant content updates. It reminds me a lot of Enemy Territory from back in the day, which was insanely fun, but just not quite the same.
Maybe I just need to play more or stick with one of the classes I don't enjoy as much (heavy, solider, scout) to see if I warm up to them as I get upgrades. Spy was the first class I tried and still my best, but I'm not a horrible pyro, engineer, or sniper either.
Still can't hit $#!& with the bow, though. The sniper rifle seems so much easier.