Muslims are indoctrinated that pigs are the "filthiest of animals". So, to a Muslim, pork is not just "forbidden", it's more like a Westerner would feel about people cooking rat meat in a shared kitchen, or rat meat sitting in the fridge next to your lunch.
Muslims are also indoctrinated that we “infidels” are the “filthiest of creatures” (Koran) and that Muslims are “the best of all peoples” (Koran).