I think "life" is the subject the action (to suffer, and many other things). A living thing "lives", while a robot doesn't.

As I'm not a scientist, I can't speak from science's standpoint, only from a living being's standpoint. It's a sentiment, a living being's sympathy, universal enough that it has become a norm, an agreement. "I realize I would suffer in a certain situation, so I consider another in such a situation is suffering, too. I want to live, so I consider another wants the same, too. Since we are all 'alive', that is." Many I's would become we. Enough we's, it'd be everyone. It would become a truth.

"Why should we protect humans from violence, if nobody is suffering inside a suffering body?" First, here we must understand what "nobody" - or "somebody" - is. The life inside the body? The "soul"? Or a "consciousness"? To me, knowing inside that body is a life just like mine, I would think that life wants the same thing I want, to not suffer. Then, the question, "why should we protect humans from violence?" is quite hard to answer. Why shouldn't we? Who are we, every human being on earth? How do we protect, with laws, force, all means? Reality has shown that different people would act differently in such a situation. Some would rush to help another, some would just let another suffer. Each has their own reason, so there won't be one answer to this question that will apply to everyone.

This forum seems like a good community too. Thanks for welcoming me!

Thank you!