Gabler
Masterpiece
It is if you live in a place with a reasonable standard of living. I retired 8 years ago after making half of that for the last half of my career. I would imagine $40/hr. wouldn't get you much in New York city or L.A.
It also matters how old you are. If you got your apartment a long time ago when rent was three digits, and you don't have student loan debt, then you might be able to stretch that $40/hour pretty far. You might even be able to support a family.