brought this up recently in the horror thread when Secret World got mentioned and I think it’s a fair point. The System Shock 2 co-op mod always confused me. I also think the atmosphere of certain games can be fragile with friends–sometimes you need peace and quiet to really feel it. And I still thought it was boring anyway :-) Maybe I’d have enjoyed it more solo? I’m not a fan of 4X co-op because it drags the pace down watching and waiting. Borderlands is apparently boring on your own but with friends I kept missing dialogue and I always felt pressured to hurry up when sorting through all my loot. I recall Atom Zombie Smasher’s co-op just being an exercise in getting in each other’s way.
I adore co-op but I don’t strictly agree with this. I’ve always felt that co-op makes any game better.