[pentlego]

I think so much of this is mentality, which as a word really undersells the problem but I can't think of a better one. You and the other commenters are probably about equally busy, but you are able to see your various tasks and obligations as opportunities to invite your friends in or otherwise socialize. They see them as blockers where nothing else and especially not socializing can happen.

As a childless person with far more "free time" than either of you, I've fallen into the same trap. I build it up in my head that I'm "just too busy" and during my downtime I'm "too tired," but the reality is often that I've just lost the habit and fail to perceive the opportunities.

None of this is meant to undersell the problem. I don't think human beings evolved for this pervasive, isolated busyness, and I think a lot of societal dysfunction cascades from it. I think it has real, negative effects on our biology and psychology, and no one should be shamed for succumbing to those effects. But at the same time I don't think the situation is hopeless and I admire and aspire to your initiative and creativity, and I think the rest of us can get there too.