So many modern people have a disconnect between the animals they eat for their enjoyment and the suffering they endure.
It always bothers me when some "animal lover" accosts a hunter and says "how could you shoot an animal?" It's such a disconnect between the free and wild life that animal lived, with a short suffering at the end, compared to the endless pain and cruelty in factory farming. So hypocritical.
I actually knew a man in Switzerland who would be about 100 now and he was one of the last traditional butchers in French Switzerland. He was quite elderly but worked all the time, riding his motorcycle from farm to farm, because when small farmers had an animal to kill, the wanted Georges because he used the whole animal and had the best sausage. Little went to waste, which is another difference between a traditional butcher and the factory system.
I just don't get this protest. What this butcher is doing bothers me so much less cruel than what Purdue does or any of the industrial farming operations.
taboo in the Abrahamic religions wasn't based on hygiene but was because the pig's characteristics are a bit too close to human.
The hygiene explanation is fairly modern as I understand it. I doubt the "too close to human" one too. That would not explain the prohibitions on shellfish.
One of the more compelling explanations, from Mary Douglass, is that the prohibitions cover "category violations." That is, in ancient thinking, fish have fins. Shellfish do not, and yet live in the water, so violate the category. For pigs I forget how it goes... something about a mismatch between their hooves and the type of animal they are, so they don't fit into Biblical categories of grazing animals or something like that.
This is a pretty good rundown:
https://www.quora.com/What-is-the-anthropological-reason-Jews-do-not-eat-shellfishI would point out that to a traditional Jew, all of these answers are "reductionist," attempting to explain away a sacred matter. For such a person, the reason would be that it was ordained by God. End of discussion.