With so much unused land spread throughout the country, those same lands could be used to grow vegetables, fruit and farm animals to later butcher them.
I love jamón/presunto that's something I can never get too much of. I've bought a jamón leg recently so need to be moderate for it to not end quickly.
I don't know about the unused land, I've read contradicting opinions about it and I don't possess the knowledge to have an opinion. A lot of people say EU is to blame, but I've read the problems persist for centuries and EU is usually the scapegoat for everything. Presunto is very popular around here, and very good; but be careful not to eat too much.