How long have you been on here? I've been on here a few months I think, and I'm just a little over 400. I'm still a long way from 1000, and that's just one account. So to me, karma is pretty important; AFAIC, I'm just a second-class citizen here at this point.
I do agree about your comparison to Reddit. Honestly, if my workplace didn't block Reddit, I probably wouldn't spend much time here.