Once women move out of their 20s, the advantage switches to the men. Women who enter their 30s in an unmarried state are likely to stay that way, or be forced to settle for a lesser man than they might have wanted. Unmarried men in their 30s (and older) who have solid finances, acceptable hygiene and at least a glimmer of personality, now have the pick of the litter. But they are generally looking at women in their 20s to have their children.
A vicious and unforgiving cycle played out in nature.
Women need to time it right or they can miss out.
I’m sure a lot of people will flame for for this, but....I think it is very smart for women in their 20s to look for more successful men in the 30s or 40s. Why? Because they have proven themselves and are probably ready to settle down with one woman. Especially a woman who is much young then them and ready to bear their children. She will always be younger than him and he will always consider her a prize.
The only problem with the above is that it makes it miserable for men to be in their 20s. A woman who marries a man in his 20s is rolling the dice in many ways. He may turn out to be a failure or a mediocrity. Or, if he is successful, he may chase after a younger woman when they are both older.
Of course, when I was in my 20s, I did not subscribe to the above. Now that I am older and wiser, I see the logic in it.
BTW, for context, I am over 60 and married to the same woman for 35+ years.