Of course, every species has a natural equilibrium. Except us, as evidenced so far, thus my point. We have to make a conscious choice about what to eat, what to kill, what numbers to make, therefore my argument is that since it is a choice it can become a moral one.
I'm currently not interested in children. I can't say that I ever will be. As long as I am uninterested in children I wouldn't have a relationship with someone that does want children. I see no moral obligation to have or not to have children of my own.
Morality of procreation? Well it'd depend on a case-by-case basis. As a species, it is our duty to make sure we prosper, breeding is the obvious method, but that can cause overpopulation problems. China enforces a 2 children per couple to help stabalise the nation's population for good reason.
Genetics and other diseases is also a very valid consideration when choosing to procreate, but it is complex. If your grandfather had cancer, it isn't enough to say you or your child will either, but if your father, your grand father and your great grandfather all suffered from the same thing, then it'd be a good indication that you should probably nip this genetic problem in the bud and not have children of your own. Adoption is always a good compromise in a situation like this.
Having HIV isn't a reason on it's own to not have children, there's procedures out there that would make it so the child isn't born with the disease, but I don't know if there's anything to prevent it from passing on to the partner.
I think procreation is an ability, like our ability to offer sacrifice to a god, or jump off a cliff, or take a step, or think rationally, or ignore carusmm's topics. Just because you can, doesn't imply you must.
I have said for ages now that there are just too many humans. And when there becomes too much of any species for the environment to cope with and provide for - usually mass starvation or disease follows. Almost like nature's own way of pruning some of the branches off a family tree that's grown way too fast for its own good
But it will always remain an issue. Having kids is a basic instinctual right after all - how do you tell 7 billion people that they can't have kids, or are only allowed to have 1 or 2 maximum If people aren't willing to stop having large families, then they should be willing to be more resourceful. We can't keep on consuming resources like we do now if we still want our population to get bigger. Something's gotta give