Sophie's choice is made up situation by someone, who decided do serve the evil.
If you don't believe in humans free will, what's to point of living for you?
Falseness, and the teaching of false and limiting beliefs is one of the greater evils, and unlike many things its not just normative and thus can't be discounted as such because it results in actual loss at some point.
> But somehow, human's still live and coexist together.
That's purely survivor bias and our limited power to destroy each other. Organized warfare was not present until population centers outgrew their resources.
Sophie's choice is a framework, and its not made up, people have used it.
> If you don't believe in humans free will
I never said that, I said choices are very few. That's putting words in my mouth, and we're done.
We, as humans, have limited knowledge. One could teach false that truly believe in. That is why need to accept mistakes. To be able forgive each other. We need to be open for dialogue and cultivate a common language. To move on and build something valuable. Violence broke all of this and never change mind of opponent, it makes opposite. It strengthens the conviction.