My parents and grandparents worked incredibly hard as did DH's and our grandparents before them. My lot originally were in the fields, DH's lot originally were underground - down the mine.
DH and I also work very hard. But supported by the efforts of our forebears have had things much easier. It got easier for my lot about three/four generations ago. DH's parents were the first white collar workers on his side of the family.
I don't understand why the op is generalising. DH's grandad lived with 9 other siblings in a two up two down miners cottage - his mother lived in a tied flat, above stables - it was bigger than the cottage - 3 beds but there were 6 children.