I'm six months into mine - and enjoy it tremendously. I love the fact that I have a job (I do treat my Ph.D. as a job) that is interesting, stimulating and satisfying. Love the fact that I can finally devote my time to doing research and reading; plus have a very OK supervisor. So there must be one or two people out there who are happy with their Ph.Ds. On the other hand, I can see how this forum can serve as a place to vent all possible frustrations, maybe this is why there's less positive stuff.