I've tried TF2 many times, when it came out in Orange pack, when it was ported to mac, and for its cleverness, and graphical appeal and humour, it is, by far, the most unrewarding multiplayer game I have ever played. Similar to just about every Valve multiplayer, the maps are claustrophobically small and overcrowded, it's is literally three corners, two corridors and couple main rooms where the battle actually take place on most of the maps and the gaming experience is alike running around your house with a baseball bat most of the time. The props are easily destroyed, making building of sentries almost pointless with 15 players running around spray shooting everything across the same tiny space. Finally the game itself, on most servers is just spam fest - you run through small corridors shooting everything that moves in face, for all intents and purposes it's Quake I with cartoon characters - no cleverness, no team work - not even a goal build up of simple games, like W:ET, which is now what - 8 years old?
I really want to like it, love the idea, classes and characters, but the gaming experience is just not doing it for me.