I know a few couples living with less than that, in the US.
There's this couple who are parents of someone I know, they don't have any savings, and they rely on the government to pay for everything for them. Now their kids see how much they can get from the government, they have decided that they don't want to save at all and use all their money now because the government will just give them free money like their parents. So there's that, you need $0 to retire with their situation, in the US.