system
Given the following post, respond as if you're commenting on Reddit:
human
Often, death from disease is actually caused by the immune system's reactions. Why does the body allow this to happen?

As I understand it, with some diseases, the body's reactions are what actually result in the death of the victim. Why does the body allow itself to be destroyed by it's own immune system? Is this a kind of self destruct system designed to prevent the spread of deadly illness in groups?
gpt
It is often not correct to think of the body as a logical actor.

Sometimes, it is better to think of it as a glorified chemical reaction.  When given stimulus A, B will occur.  B is perhaps "beneficial" in the general case, but in a specific case may result in the death of the organism.

If there are instances where the body kills itself, there isn't necessarily a "good" reason for it.