I'm in the same boat with my girlfriends. I think it happens naturally as we age - as you said because of responsibilities. But I think if you have at least one person you can talk to about important things, you're probably doing okay.

I've seen my mom reestablish relationships since she retired, so maybe we'll do the same?

It's hard to say what exactly young men think they need, but I can say that screens have completely ruined socializing in general. Even my parents sit and stare at their phones when they're supposed to be visiting with their kids and grandkids. Too sad.