What does the Original Poster hope to gain from this information?

Trying to meet young ladies I think!! Probably best to do that in real life or at least through friends or Catholic dating website. A couple of my friends met their spouses on Catholic Match. 

The physical (biological) peak in a woman's fertility does not necessarily coincide with her psychological readiness for marriage. Unless one sees a woman as merely a physical being, and not as a human being that is a composite of a physical body and an immaterial and immortal soul, that consideration is at least as important as noting physical readiness for procreation. The same can be said for men; many, probably most men, are physically capable of fathering children long before they are psychologically ready for Fatherhood. Is this hard to understand?

Now, of course, our conversation is taking place in modern Western civilization. If you want to say that men and women should have psychological maturity more commensurate with their biological maturity, I don't disagree. But, it seems to me, that that requires substantially changing the culture. Moreso, it requires changing individuals. That is the fundamental question and problem; are we really willing to change ourselves or should we just continue, like impotent jerks, to blame everyone else for the problem?

It's on the parents to raise their children properly. Lots of Catholic 'men' who have no control over their wives and think their daughters can do no wrong.