That makes me think that there need to be dedicated locations, perhaps with a few critical utilities already in place. The numbers of people living there and their reasons for living there would be a useful measure of how well we’re doing in providing proper shelter.
Those locations need to have ready access to various services, not parked on the outskirts. Maybe it’s worth giving up a park or two. Keeping them central and visible would be an important part of getting communities on board with proper social housing programs.
I have no doubt that, in certain climates or certain times of year, some people would deliberately choose to live there for adventure or lifestyle reasons, but I don’t see anything wrong with that.