If a person earns 30K and his family consumes 40K in education and medicine it's a burden, not profit for a society.

What a crass and callous calculation of a human life. Yeah, no. For all we know that same human makes really good food, or music, or art, or stops crimes.

Or maybe we shouldn't measure human worth based on fucking money. There will come a time when your own butt is worth less than the food it takes to keep you alive, I suppose you will kill yourself then?