When are people going to realise that Halal, Kosher etc were invented by the religious leaders of the time to promote good food hygiene and are a complete anachronism.
Think about it, it all comes from the old Testament (which is common to Judaism, Christianity and Islam), which was written over 2000 years ago, when clean kitchen implements, ovens to ensure things were cooked properly etc didn't exist.
The leaders saw all these people dying from shellfish, pork, cross contaminated food, badly butchered meat etc, and decided to come up with a set of 'religious' laws to prevent it happening.
The leaders wanted as many fit healthy people for their own religion as possible. Ergo, the 'no spilled seed, no contraception etc argument as well'