Ha, glad someone's backing me up on this!
I'm fully aware my mind could change, but if I want one that bad I can attempt a reversal, or they can suck some sperm outta me with a needle or whatever it is they do.
I don't put much stock in blood-relation, I have blood relatives that I care deeply about, but I have ones I don't, and I have non-blood friends/family that I care about as deeply or more than most of my blood relations. So for me, a child being biologically mine would certainly be neat, but a child to mold is a child to mold, genetics don't make parents, parents make parents.
It's as much a choice I'm making to make sure I cannot possibly have an accidental child, as it is an ethical one. I'm bowing out of reproduction for the sake of the species, but that doesn't mean I can't participate in raising the next generation. I have many blood-nieces and nephews to come that I will help raise, and many non-blood nieces and nephews already in existance and being influenced by me. I'll have to settle for that.