"And the pig, though it has a divided hoof, does not chew the cud; it is unclean for you. You must not eat their meat or touch their carcasses; they are unclean for you." - Leviticus 11:7-8
Bacon is one of the tastiest things on the entire planet, but the Bible doesn't want us to eat it -- or any part of the pig for that matter. The pig is just one of many "unclean" animals that were forbidden to eat, but only for the strange reason that it eats normally. "Clean" animals like the cow regurgitate their food and eat it again.