I'm always looking for a chance to get up on my "coop" soapbox.
When you say "suck", could you possibly mean that many players don't play cooperatively?
If so, I wholeheartedly agree but having said that, there is hope. Most of the UC3 players I still game with regularly pretty much play coop exclusively (most of my comp friends have moved onto other games), they most assuredly don't "suck" AND I met the vast majority of them in random matches.
I like playing co-op based games and I'm really good at that. However, I only play on crushing. There was no real challenge for me when I used to play on hard, not to mention on normal and easy. I don't play a lot co-op based games lately eventually I will start playing them more.
My favourite co-op game game is shade survival mode. I have only completed a couple of games before on crushing with a good friend of mine but it was extremely hard to do that so. Ever since then nobody is willing to play shade survival with me on crushing since most of my friends on PSN find it extremely difficult to complete a shade survival game on crushing.
Feel free to add me if you want. I'm not online a lot these days because I'm studying but on Easter holidays I wiill be playing a lot!