[justinhj]

Maybe this idea of worth is hardwired inside us. As animals that existed in small groups throughout the world there was much work to be done in the daily activities of hunting, cooking, fixing and building shelters, raising children and possibly fighting with other tribes. With those constraints where there are no idle hands, the elderly and disabled become liabilities that are often discarded. Lazy people probably would not be tolerated in this environment.

So it seems likely that the distaste for someone not working as hard as everyone else is deeply ingrained in our culture and possibly even our genes.