The point of a PVE server is that people are... Um. For lack of anything else that isn't profane; mean.
Getting camped by high level players that are chillin' in a low level area killing newbies isn't exactly my cup of tea. They don't get anything for it, sure, but that doesn't mean that they don't just want to ruin your game. If you can't go do that quest you need to do because someone's standing around where you have to be... I mean. Really. What is fun in that every day?
Whenever I play PVP, that's what happens to me. I dunno why. I attact idiots. I never get anything done. Sneak around and try to avoid them, I might get a bit of progress, but then I'll be standing at an NPC selling my loot and suddenly there's a level 50 dirtbag teabagging my level 5 corpse. :U