I find modern games to be too violent, but I didn't want to be so extreme with my voting, in order to avoid sounding dictatorial.
They should control better what's in each game, but total censoring wouldn't be the answer either. Censoring violence would also mean, perhaps, censoring some pretty interesting stuff, since I believe everything comes together (I mean, it's the same people who censor, and if they become more strict, they would censor not only violence).
What I would censor every time is games that promote crime, like GTA. Fantasy violence is one thing, that doesn't bother me a lot, though sometimes it's borderline with bad taste or even exceeds that line. But real violence is really disturbing, and letting it in the hands of younger gamers is not a good idea. They should grow up playing Mario, not GTA (in my opinion).