Because the well of Christianity has been poisoned since the time of the Romans and the West hasn't produced anything to replace religion competently. And who does the pork ban/dislike hurt? Definitely not pigs! And God puts it on the same level as eating raw blood and carrion: it's bad for you, bodily wise, not morally. And if you can't even restrict yourself to not eat ONE of all the animals in the world, what will you control? Lol. Most of the Qur'an is nothing but moral precepts, and objective morality kinda does require the belief in God's objective right and wrong judgements. Moral relativity is a plague in the West because they cannot even conceive the fact that some things are good and to be sought and others are bad and to be avoided. But no, the Western man thinks anything can go, it's just 'cultural differences' and 'don't stop me, this is my life!' (doesn't believe in a Day of Judgment and doesn't care about their impact in others life).
The best advice I can give you is to read the Qur'an assuming most of what you've learned is nothing but wind. Your soul is in your hands, I did my part today.