Domestic pigs, being omnivorous animals, could be pastured and were extremely easy to raise.
Of course, the cost was also high.
Piglets were rather expensive, the growth period was long, and without eating much nutritious food, coupled with issues related to the domesticated breed, they could at most grow to about a hundred pounds, nothing compared to the wild thousand-pound demon pigs.
Only people with good household situations like carpenters, blacksmiths, stewards, and guards would raise various livestock and butcher them for food when they grew up, which was a way of improving their lives.
Ordinary farmers didn't raise pigs to butcher for eating.
After all, they had no extra income.
And humans had various survival needs.
What do you do if farming is your only source of income?
You could only raise these livestock until they grew big and then sell them to local stewards or foreign merchants in exchange for various living necessities.