List off a couple of things you think of as positive and I'll break it down for you since your imagination seems to be limited. I'm not saying that as a jab, it's just that even if you disagree with me you shouldn't really have a problem seeing what I'm saying.
You are correct in so far as the United Nations Universal Declaration of Human Rights and nearly every national article enshrines the right to reproduce or rather they dictate that no willing couple of legal age should be stopped from procreating by the state. This right is held quite high, unsurprisingly considering how core reproduction is to human and all other life. However that doesn't mean it is beyond reproach, in fact rights exist mostly to allow fringe cases, they say nothing of the moral or optimal way to live your life. One can have a legal right to do something if they feel but a moral duty not to. My opinion is that anyone who looks at the matter clearly should see that such a moral duty exists in preventing needless suffering by not reproduce thus invalidating the right without actually revoking it. That would be the ideal path.
As for the possible practical application of the idea failing that one can imagine in the not too distant future a drug or virus that causes infertility and few if no other symptoms which could covertly be put into the water supply of a nationor maybe distributed with incentives for those who take it. Advancements in A.I. and virtual reality could also help fill the gap for those who want an emotional bond similar to that of a child (people seriously treat their pets like kids, don't tell me this is far fetched). However once again I will say that I have no serious expectation that anything close to that will ever happen.
yeah you already made your opinion clear, you don't need to repeat yourself in various ways.
I highlighted the part that shows why none of it matters. oh wait, I have to highlight more, because you sound like motherfucking Jim Jones right now. I italicized the sentence after because you should understand that this already happens and has happened frequently throughout history. It's called Eugenics; put a name to your beliefs.