Religious dietary strictures are almost never based on the actual safety or nutritional value of the foods in question, but always on primitive notions about the 'goodness' of the animal.
It's really funny when Muslims go through mental gymnastics to try to scientifically justify why pork is less suitable for human consumption than beef or chicken.
As I understand it pork is haraam because pigs are seen as unclean, and yet Arab nations consume chickens ravenously, when chickens are some of the most filthy animals in the world. They'll eat cigarette butts if you throw them to them.