Is this a crazy perspective?
The ability to reproduce shouldn't be a birth right. Whether it be virus or something that occurs at birth or puberty, the ability for men to impregnate women should be taken away and/or the ability for women to get pregnant should be taken away. How? I don't know yet. But the only way to reproduce would be to earn a license to parent, in which you will then be given some drug or have a procedure done to allow you one pregnancy. If you want more children, you must go through a reexamination to prove you are still fit to parent.
Everyone talks about freedom, but our freedom to reproduce is one that needs to be regulated.
Right now i see no way this can negatively effect the world, assuming we can somehow manage to not be racist about it, which is a big assumption, i know.