If you go to another country to work, you learn that country's language.
If you go to a pvp realm to play, you don't complain about pvp happening.
I too went to a PVP realm (Burning Steppes) back on TBC after my hiatus, because all my friends had moved there. I hated pvp, only really enjoyed questing, dungeons and raids. You know the saying "if you can't beat them, join them"? That worked.