I know many people who travel from place to place in a semi nomadic life and work in the fields here and there. Never really heard any of them complaining about their life. They sure have their problems, but that's everyone.
In many countries the concept of employment is very feeble and most people just do their things and sell them to other people. They live just fine.
Nah, he's a cool guy. Everyone around enjoys his company. A little bit of the philosopher of the town.
He does not work, if that is what you mean by giving something in return. However he also does not use many things. We live in a rich country and things are plentiful. What he gets is either stuff that people throw away or that they are happy to give him.