I understand pretty fully the concept of playing for fun, and K

is less important than teamplay. that said, I'm a stats junkie. I used to be in the top 50 with the old system, and I've just started playing again, and am almost back in the top 1000. The kind of analysis you want to get is the type I think about all the time.
in terms of K

, because I'm just sorta learning how to play again, I'm at about 2:1. average; my stats don't reflect it yet, because back when I was really learning to play again, I was down at about 0.60. I used to be much higher, and on good nights, I've hit 3-4.
I would also like to put this point forward:
Yes, teamplay is more important than kill ratio. However, the two really aren't mutually exclusive. really, the more of their team that's dead, the less you have to worry about. I remember way back when I was really good, I got a 41:0 ratio on turbine as a demo. That was hopping between camping the garage door, their intel, and vents. I capped the intel once in that period as well. However, mostly, I was camping the door. Now, the interesting thing about it is that I killed LOTS of people, and quickly, often more than one at once, and held mid long enough to get engies set up basically by myself. Yes, I was holding a door on my own, and not rushing intel with the team, but in doing so, I solidified our position at mid and ultimately was a large factor in our victory.
Who's to say I should have been rushing intel and getting myself killed instead of what I was doing?
Generally, granted, the above scenario doesn't happen. I was lucky, and had many close scrapes. That said, I think I was justified in my role there, and I don't particularly think I was being selfish by camping either.
Just goes to show; it's all about perspective; sometimes campers are useless, but sometimes they certainly aren't.