Should I go back to wow?

I got my DK to lvl 80 a few months back, first 80 I had, after that the game just got boring cuz there really wasnt anything else to do. Should I give it another chance? I really hate the 2 hour wait time for party search if you are a dps. Is there a way around this? If not, maybe I will make a prot pally, are they any fun? What other tank classes are pretty fun? Thanks.