Speaking from anecdotal experience with online communities, when idling or toying at home during their free time, people actually engage socially with friends through chats, networks, games — pick your entertainment drug. They're everything but alone, and it's genuinely real if limited cognitively compared to a real physical interaction.

If you add voice chat to that, at the end of the day you really feel like you spent X hours with friend(s), there's just no other way to put it except for the physical location.

It's almost a given to me that with appropriate videoconf wall-sized (real-world size) screens in all living rooms, we'd just "invite" friends this way most of the time unless the physical interaction was necessary. Less maintenance, less friction to just spend a cool quality hour.

The 'effort' required to move out of your house is getting increasingly higher, your 'local maximum' would essentially converge to an actual maximum in a perfect virtual reality (of which the "80%" / good enough might be just around the next decade).