[trompetenaccoun]

It isn't a culture thing in my experience and it has nothing to do with religion as another user suggested. You can see the same in China where many people are not religious. Or Cuba, people are extremely social there. In the latter case it's by lack of choice. When you have no proper internet access, no money, nothing to watch on TV and nowhere to go for entertainment apart from the town square and your friend's places, it's a no-brainer. So I guess that would be one way to create that experience.

As for China I already see it changing with increasing development. Families are't as big anymore, younger folks all move to the cities for work. The old ones stay behind and are increasingly lonelier. Kids are lonelier too than they used to be. They become less social which increases loneliness of course. It's a vicious cycle.

My idea without having done too much research into it would be encouraging and incentivizing people to return to the villages. It's possible for anyone who can work remotely and those jobs are increasing so it's increasingly viable. Maybe without understanding it, I think many of the lonely people are uprooted. They have nowhere they belong. They just exist but they aren't part of any community.

Btw, this loneliness is also dangerous in another sense because those are the exact targets terror groups and other extremists look for to radicalize online. It's hard to do that with someone with a happy life and good friends they see on a daily basis.