Not looking down on them. The server you pick makes a huge difference on your gameplay experience.
It's not that they require less challenging places, is that places with good players are usually more fun, both in terms of challenge and having a nice team to back you up. I'm an average player, btw. Competitive players often find the servers I think are challenging pub servers to be too easy or too messy.
Ah. Sorry for being snappy, I'm in a bit of a shit mood. I do see your point, though. There are many players of different skill on my server. Some days I make all the other snipers change class because I dominate them all because they are scrubs (fun) and some days I get killed so much that I myself change classes to try and get a revenge kill on the bastard who keeps shooting me in the face (also fun!).
I would sometimes like a team a little better than the absolute morons that I usually get :p
@Duke 2.0: Why? Why what? why do they need more diversity? Because if they don't have any wimmins the game is SEXIST!