population dynamics.
I was considering your inquiry on the personal (=interpersonal) level.
The overwhelming majority of the relationships in life do not result in procreation. Relationships between meat intelligences have been steeply declining since electronic devices advanced beyond the telephone.
All I can do is feel sorry for people who don't engage in satisfying relationships because they are too lazy or misanthropic to establish them. I can't help but recall the old saying -
In order to have a friend, you have to be a friend. If you can't leave the screen to enjoy "real life" then I guess you deserve to have Grok X. Musk IV as your bestie.