Healthy human nature hates dead creatures. Conscientious people consider eating corpses to be an abomination. They believe that it is a very indecent and degrading thing for human beings. That is why in all the heavenly scriptures and religions eating corpses has been declared haraam and eating slaughtered animals has been preferred everywhere. No matter how different the method and rules of sacrifice.
It is not God's will for a person to eat whatever he does not want to gain, even if he has no desire to do so. The condition of the corpse is exactly like that. However, it is desirable that the animal that is slaughtered or that is hunted contains a part of human determination and effort.
An animal that has died a natural death is feared to be permanently diseased or to have been the victim of an accident or to have eaten poisonous grass or plants. And then there is a risk of huge damage due to eating it. Or he may have died from poor health or poor health.
By forbidding corpses for human beings, Allah has provided food for the animals and birds with special mercy. Because they are God's creation just like us.
Another aspect is that human beings do not leave their animals to become diseased or weak and perish. Rather, he will either give treatment immediately or give eternal peace by sacrificing.
235.209 SRY