It's the two extremes of work. One is hard physical work directly associated with producing the things you need to stay alive, the other is purely intellectual work which is 20 levels of abstraction away from your necessities.

> Farming is hard work. Modern farmers have college degrees, millions in equipment, and a vast amount of knowledge and experience you do not have.

It depends on the scale, I know 80+ years old people living in the countryside, still splitting their own wood, growing their own garden/orchard, manually removing potatoe bugs from their decently sized potatoe field, cutting grass with a scythe, taking care of their chickens/goats/sheeps... they're 100% self sustained and use tools from the 19th century they inherited from their parents. They're in better physical and mental shape than most code monkeys I know while being 50+ years older