[baursak]

> Suburbs are structurally lonely

I think it's a factor, but not a major one. Look at Tokyo, for example, which is probably very close to an ideal urban living arrangement in terms of density/comfort. Yet Japan also has a huge problem with "loneliness epidemic", from hikikomori to kodokushi.

I think the biggest factor is what grandpa Marx identified hundred and fifty years ago: human alienation is an intrinsic feature of capitalism itself.

There's tons of literature on this, e.g. see links below, but many people seem to be afraid to even read the arguments, let alone engage.

https://socialistworker.org/2003-2/467/467_09_Alienation.php

https://isreview.org/issue/74/capitalism-and-alienation