This thread is offensive.
yeah, questioning religion is offensive.
but this isnt...
Qur'an (5:6) - "And if ye are unclean, purify yourselves. And if ye are sick or on a journey, or one of you cometh from the closet, or ye have had contact with women, and ye find not water, then go to clean, high ground and rub your faces and your hands with some of it" Men are to rub dirt on their hands if there is no water to purify them following casual contact with a woman (such as shaking hands).
To be fair, orthodox jews view pigs as unclean.
westerners also have irrational fears of certain animals, but at least we have a choice.