Are women standards another reason so to low birth rates?

By their standards, I refer to the fact that most women are naturally more attracted to genetically superior, or in this case, attractive men, and ditch the uglier men. This goes for money, fitness, height, etc etc. This isn't inherently a bad thing, just nature taking it's course. Although, the case of eugenics come into play and that is a whole different topic for another day. Most men, on the other hand, would probably settle for a person as similar to them. Not the fittest, but fit enough. Not the wealthiest, but wealthy enough. Stuff like that. With most men realizing marriage is pretty dumb to do in the modern day, and most likely a scam, along with all the other risks, they seem to resign from birth and marriage. What are peoples thoughts on this?