PvPing takes away from leveling.

PvPers look at it this way: At the cost of leveling speed, I'm having a blast with PvP.
PvEers view PvP as a distraction from their true goal.

If you didn't enjoy the experience, than it would make sense for you to move to a PvE server.
Also, don't expect that, just because you are a 5-boxer, means you are omnipotent in PvP. Yes, people will gang up on a 5-boxer because they are defeating a single person who wields an army, and also because it's a different challenge for them.

If I get camped, I will either:
Slowly make my way, death hopping, back to a friendly zone, where NPCs can back me up, or
Respawn and kill as many (start with the lowest levels/weakest) of them as I can before I get owned.

If you can't make this fun, it would be in your best interest to play on a PvE server.