PvP

[savaughn]

On a PvE server theoretically, if you don't want to engage in PvP  you don't have to and your gameplay experience will be unaffected by PvP.
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I think the problem is that your underlying assumption is wrong. On a PvE server you are minimally impacted by PvP. No one ever said you wouldn't be affected by it. You are. By design. Similarly, you may wish for compelling end game content that does not require having to group or the ability to complete all game content without ever having to play with others and be disappointed. You will be disappointed with WoW, because the game designers felt very explicitly that:

a) the game is better when played with others
b) other players will always be more interesting to compete with than game AI.

What you are complaining about is griefing. In some ways, the PvE servers minimize griefing. In others, the game design explicitly allows it in an effort to encourage intergroup conflict. Since this is a core part of the game design, unfortunately, this leaves you with two options. Either learn to tolerate (or even enjoy) it, or find something less stressful to play.