Because the Abrahamic religions are silly.

Boy, @St-Sinner, you really hate Muslims.

They taste so friggin good though..

I eat fish. Big fish eat little fishThe horror. Dude it's your choice, eat whatever you want and works for you.

The story about the Gaderine swine in the bible always puzzled me. If the people couldn't eat pig meat why keep a herd of pigs ?

Most of the pigs that are eaten by humans have eaten the food that humans fed to them. They didn't have any choice.

But pigs do not usually kill each other. Which animal does that?

I haven't eaten pork in about 50 plus years. Have always found it unpleasant as meats go. I know it was a part of our diet when I was a child, but I gave it up and never miss it. People who put bacon on everything just can't cook and annoy me!

Islam is not the only religion who won’t eat pork.

I grew up in a farm town next to Smithfield, VA (self-proclaimed ham capital of the world). You would be surprised how many animals will eat anything if you cut it up fine enough for them to be able to digest it. The new science of animal husbandry helps with this though, we feed them what we want them to eat. (Just don't send it to China for slaughter and then back to your home country for consumption.) But the quality of meat and the taste depend entirely on how the animal is treated (feed, conditions for living, slaughter process, etc.). I still eat meats, despite knowing how they are raised from birth to plate.

My neighbors have both pigs and chickens. I used to feed the chickens my scraps now I give it to the pigs. I felt guilty giving them scraps from pork dinners. but I was informed that they will eat anything. Chickens will too but pigs have stronger teeth.

My neighbors have an old-fashioned very stinky pigsty. My neighbor also told me that moonshine is almost always raised pigs. She said when the revenuers disappeared they disappeared completely because of the pigs. She also said they were handy for getting rid of stillborn babies that were birthed by unwed mothers.

My cat has become a wonderful gopher hunter. He brought one in the other day that was only half dead. I sure didn't want to kill it so I took it next door and Mama pig enjoyed it. I thought this for sure would make we never want to eat pork again.

Then I cooked some bacon and it smelled wonderful.

I love bacon.

Chickens eat each other too, just like fish and many other animals.... I guess cows, sheeps and goats don't participate as they are herbivores. ‍
And I just enjoyed a nice pork ribs dinner.