>>37582652because it is their religious belief that pig lifestyle is filthy as a sin thus making pig a breeding ground for all sort of nature fuckery like parasite, worm, etc and that exluding other reason like the unholy amount of fat a pig produces. generally, consuming pork bring more harm than good especially if there is other alternatives.
this hold true thousand year ago when the holy book is being written and also for modern era where underdeveloped countries still using traditional method or even hunting for obtaining pork, but didnt really matter in the western countries where pig farms has been streamlined so much for rapid and efficient production.