Imagine sitting down for 9 hours typing, then going home and scrolling through porn and getting high and thinking that's much more interesting than conquering a village, sailing the coast of a new continent, having sex with a beautiful virgin, and teaching your sons to reach even further into greatness.
Or on the other hand, the hard reality redpill that your life in the past would be manual labor on a farm as a peasant, making a lord rich.
I still lean towards a romantic past - working hard with your village friends, then going to the pub with them, and coming home and making babies with your wife, in a home you own, with a tended garden and many children, sounds better than writing Ansible playbooks and jacking off to pornhub. And this is the life of a loser in the past, compared to a "winner" of the present.
Maybe it's anomie, people don't have children when they don't believe in their civilization