- Physical back-breaking work has not been eliminated for most people.
- Physical exercise triggers biological reward mechanism which make exercise enjoyable and, er, rewarding for many people (arguable for most people as it is a mammalian trait) ergo it is not undesirable. UK NHS calls physical exercise essential.
> Physical back-breaking work has not been eliminated for most people.
I said most of it for most people specifically to avoid the quibble about mechanization in poorest countries and their relative population sizes.
> Physical exercise triggers biological reward mechanism which make exercise enjoyable and, er, rewarding for many people
I envy them. I'm not one of them.
> ergo it is not undesirable
Again, I specifically said "and for many people, for many reasons, is often undesirable" as to not have to spell out the obvious: you may like the exercise benefits of a physically hard work, but your boss probably doesn't - reducing the need for physical exertion reduces workplace injuries, allows worker to do more for longer, and opens up the labor pool to physically weaker people. So even if people only ever felt pleasure from physical exertion, the market would've been pushing to eliminate it anyway.
> UK NHS calls physical exercise essential.
They wouldn't have to if people actually liked doing it.
- Physical back-breaking work has not been eliminated for most people.
- Physical exercise triggers biological reward mechanism which make exercise enjoyable and, er, rewarding for many people (arguable for most people as it is a mammalian trait) ergo it is not undesirable. UK NHS calls physical exercise essential.