I think there are some kids on your lawn that need to be yelled at.

if you would also sign a document stating that we could let you starve in the street (with no complaint from you), should you run out of private funds after your retirement, we'd be OK with that, too.

I wouldn't be OK with that. The issue isn't that someone might complain when they are starving in the street, the issue is that no matter how idiotically someone has conducted themselves, the public as a whole is not going to let them starve in the street, whether they complain or not.

Social Security prevents psychopaths (those who find it acceptable when someone in a wealthy country where people are paid to not grow food starves to death in the street) from being free riders on the backs of those with a conscience.

Funny how people claiming cigarettes will kill me when I've been smoking them for years and it keeps not happening.