My answer is that people can live in anything—tents, thatch huts, cardboard boxes, under a bush... The question is how do you want to live.
This morning I met a woman living out of the Toyota Matrix pictured above. It's not spacious, it's not fancy, it doesn't even have a toilet. But it works for her. A couple of years ago I posted about a woman spending months at a time traveling with her dog in a Suzuki SX4. (below) Does she look like she's suffering?
guy boondocking in a Metro (and now in a Tracker).