Because the same hyperactive kiddies fall for it over and over again. It's not our fault you can't go two seconds without running around hoping to see someone before they see you. We know you're coming because you aren't capable of sitting still, since you act like video games are boring if you aren't constantly pushing some button on the controller.
Thanks for being part of the "ME ME ME MINE MINE MINE I WANT IT NOW GIVE IT TO ME NOW GIMME GIMME GIMME" generation. We appreciate you making matches a cakewalk for those of us who like to outsmart our enemies and we also appreciate you giving us a ton of laughs in the lobby from all your "camper" crying.
I am not a camper, nor a mindless rusher. But if you really are a camper, i can safely say that i can probably beat you in a 1vs1 game. Problem with campers is that they're used to staring down one location, so they end up taking a big hit on their reaction time.
This is probably just a troll topic trying to get attention though --- Vote for my new sig: http://www.gamefaqs.com/boards/669289-call-of-duty-black-ops-ii/65284548