Well, I don't think camper suck - they're just a different kind of player. ( And seriously, in an actual war, I'm fairly certain some folks are left to guard a position and would be called campers )
I will admit, I camp sometimes. I don't mind if people hate it - you know, if you know where I am, come and get me.
I killed the same guy six times in a row in Fallout ( map ) once ... when he finally got me, it was because I was laughing so hard. I mean, he just kept coming. You gotta love the guy, for persistence alone.
Basically, though, when I do "camp" - I don't stay in the exact same position after a kill, because I know you're going to come up after me. I will reposition or fall back.
Also, basically, if you're sniping - you're camping. Like it or not, running around with a sniper rifle and encountering someone - you're a dead dog there.
I just figure, you know - it takes all types kinds of players. Campers, run-and-gunners, snipers, follow-the-leaders, etc.