Even if a person wasn't born a certain way, that just means their life experiences shaped them to be that way. Because none of us have exactly the same life experiences, we cannot really judge others and say for certain that we would have done differently if we had had the same life experiences. In fact, we can almost certainly say that if you were born with the same brain as someone else, and had the exact same life experiences, you would make the same choices. I explore this all in much more depth in my article on free will: https://medium.com/deep-thoughts-about-life/do-we-have-free-will-almost-certainly-not-4ef11c73ebce