On the sugject of (ahem) orgasmic birthings, I read about a woman who used her vibrator for painrelief during labour and had a rather long one (or many, I don't remember). I don't believe she needed any other, more conventional, pr at all.
I sort-of agree with Steppy1 - could do it again any day, only not quite, because I think I need the build-up to it of being pregnant. Childbirth hurt, but each time the moment I held that miracle in my arms I was ready to do it again. It's true what mum said - you do forget the pain.