Who is the number one “hoarder” of houses in the U.S.? When I bought my house, all I had to deal with (as far as I know) was the bank and the prior owner, who seemed happy to sell.
1 is pretty easy to experimentally deduce -- simply go live outdoors wherever you are. Skip the tent, that's housing too. Just make yourself a little bedding spot in a tree somewhere like our ancestors did.
Pretty sure in most of the world, you wouldn't last long without some form of shelter or housing.