First of all, we all know that Islam does not eat pork, but this is not only stipulated by Islam, but also by Judaism and early believers in God. At that time, the environment for raising pigs was so bad that it was easy to get sick, and the pigs themselves were not clean ... So all the three religions thought that pigs were not clean (in fact, they were also religious people, using religion to prevent people from getting infected with the plague when eating pork). At first, they tried to dissuade them, but they couldn't persuade them at all ... because pigs are easy to raise ...).
I don't eat dead things except pork. This was true at the time. A creature that died by itself died unnaturally. Do you know if it died of illness, what disease, or infection?
Secondly, don't eat blood, carrion and meat without the following treatments:
"Muslim butcher facing Mecca, chanting before the knife, a knife cut off three tubes:
The esophagus, trachea, two arteries and veins from throat to neck of domestic animals can relieve the shock and pain of domestic animals.
Don't damage the spinal nervous system of animals when cutting meat, so as to avoid the death of meat before bloodletting is completed.
After the knife is cut, the meat must keep its heartbeat waiting for bleeding, and blood is forbidden to eat. Bleeding should be drained as much as possible until there is no blood. "
However, in Europe, it is inhuman to shed so much blood, so a lot of meat does not bleed ... thieves smell fish ... except Muslims, our domestic meat is also bled before death, which is not so fishy. In Paris, I have eaten halal and bloodless ordinary mutton, and the taste is really different. We can't compete with pork, but compared with domestic pork, my classmates and I are crying to go back to China to eat pork ... it's so fucking delicious ... we can't cover it with so many materials.
A few of us thought that we were forced into a fake halal by France ... but after a year or two, we got used to the smell and didn't care ... It was really impossible when we first came.
Off topic, anyway, this custom has been preserved until now. I think the biggest reason is that in order to prevent people from eating pork, many ways have been thought of, such as defileing the soul and being rejected by the Lord. Nowadays, except Christianity, Judaism and Islam don't eat pork.