Yes, the average age of marriage is lower for women that it is for men in every country in the world*. I have a hard time believing there’s no genetic component to that.
But to fantasize about DILF’s seems like hiding to me. It suggests, “I don’t believe I’ll ever find someone, so I might as well fantasize about something impossible.”
First, change the belief.
[*Except one: The Republic of Nauru in Micronesia. Here’s the full list.]