I generally consider myself a Carebear. I like PVP sometimes, but not all the time. I have played on a PVP server to level 40, but quickly got tired of it. (not just the level 70s, but even the same level guys who'd try to attack me and always end up dying).

There's still some world PVP on PVE servers. A lot of times outside raid instances there will be one or two people flagged. So someone attacks him and that flags him and then half the people there flag and a small battle pops up. Nothing too long, but it can still be fun.

Personally, I'm going to go with my standard Do What You Think is Fun answer.