Health:
“These assumptions make no sense. Either a person can have kids or they can’t. Any woman can be tested if they are still able to have children. I personally would go out with s/o my age, if they can prove they can have children!”
and
LU -“I do think it’s a problem when guys won’t go out with girls their own age or even a few years younger then them (in some cases”
Why is that a problem? That’s the reality!”
It may be reality, but it is still a problem- for the older girls whose dating opportunities plummet after a certain age, and for the older guys who insist on dating much younger girls, who turn them down because the guy is so much older! Yes the guy has a chiyuv to have children, but for some reason he did not feel that a pressing enough reason to get married all these years…
In terms of testing- without going into inappropriate content, fertility is quite complicated, depends on lots of factors, often in context of the couple, and there are B”H many solutions available today that can help what would otherwise seem hopeless. It would be a gross violation of tznius if this was asked before marriage. Plenty of younger women also have issues- should this then be a common requirement on a shidduch resume?