Why YSK: There are a lot of people these days living alone with pets and if anything happened to the owner, others may not know to attend to the pet. If something happened to you, a coma, an accident, death, etc, your wallet would be the first place anyone would look for info about you and it would probably be the fastest way to bring attention to your small loved ones.
I’m impressed by the idea that people can still afford to live alone.
A tent outside is still living alone
As an american that would impress you. Not every country is the same.