Working in our society generally is to put food on the table and provide shelter for oneself and a family. Little different than animals. If we are providing the food and shelter to another able-bodied adult we are the ones who are interrupting the natural order and cycle.
The able-bodied in a species do work. They hunt. They prey. They disseminate pollen. They build nests. Etc.
It is absolute nonsense to justify indolence, withdrawal, lethargy and isolation by citing animals.
When our adult children do this on our home, refuse to be productive, refuse to conform, refuse to function, refuse to cooperate--the problem is US. For whatever reason we refuse to take control, set limits, call them out, and to put a halt.
Of course there are conditions that make it impossible for people to work: Disability, illness, pregnancy, old age, are some of them. That is why I have harped about a psychological evaluation and treatment, to rule this out, and to remedy it, if it is present.
The problem here is the ongoing conversation between parent and child, about something that is patently real. If he said, animals don't work, why should I?, he said something untrue. Animals do work.
So what he is really saying is: Animals do work. And so should I.