Well, isn't it "difficult" to have a baby when man is approching the 60 years old? I mean, a baby needs that we must "give" many hours to take care about him, and many other things, like education, for example. Maybe, I just say "maybe" that some things can not be really "same as before", for someone who will become old, slowly, but surely. Even if man stays young inside, whatever he does sport or not, but well... is it good for any baby to have about 50 years decale with his papa/mama? Can we share many things like him when he will be 5 years old ? And when he will be 15 years old?
The younger we can have babies, the more (maybe, I think) we can share more and more things with him. But when being "older", is it very "A MUST HAVE" ?
I don't want to "fight" with anybody about that because I can understand many points of view and the problem with sperm problems when we become old... but.... if someone really wants to have children, if he can not "give life", he can anyway adopt, and there is no problem about that....
To me, and because I was adopted, I can say that it is a real "proof" of love.