I don't really PvP, and I don't really care about PvP. However some people do, and more power to them. If they get some fun out of new game modes for PvP content, that's just fine with me. It doesn't add anything to my experience, but neither does it subtract from it. I dabbled in PvP a while back with the release of Frontlines but haven't gone back to it since. It's an unbalanced mess of a system which favours DPS classes and screws over everyone else (healers especially), but clearly some people enjoy that.

Let them have their toys, and we'll play with our own.