Subsistence farmers in developing countries often have quite happy lives. I've lived in PNG, and the biggest thing they lack is health care, but that's getting better all the time.
Farmers in developed western countries probably have it worse. Supermarkets have driven prices down to ridiculous levels, so the profit of, for example, dairy farmers is very low. There are reasons the suicide rates in rural areas is high.
The flip side is, farmers in developed western countries have the option of selling their land to agribusiness and sending their children off to do something less godawful.
Economists tell us the "developing countries" will never actually develop until rich countries stop subsidizing their agriculture. Those folks in developing countries are stuck.
Farmers in developed western countries probably have it worse. Supermarkets have driven prices down to ridiculous levels, so the profit of, for example, dairy farmers is very low. There are reasons the suicide rates in rural areas is high.