Interesting, I can only think of three cases: 1. Homeless were killed (e.g. nazi germany). 2. It's a family honor matter, like in Caucasus countries. There are

Interesting, I can only think of three cases: 1. Homeless were killed (e.g. nazi germany). 2. It's a family honor matter, like in Caucasus countries. There are no retirement homes as well, as every family takes the burden of taking care of their elder, because it would be very unhonorable. Although I still doubt they have 0.0% homelessness. 3. Official numbers don't reflect reality. Really curious to learn other ways to solve the problem. What those other countries you mean?