How can people say that homosexuality is not a choice?

A person may be born with a greater susceptibility to homosexuality, just as some people are born with a tendency to violence and other sins. That does not excuse the person’s choosing to sin by giving in to sinful desires. If a person is born with a greater susceptibility to anger/rage, does that make it right for him to give into those desires? Of course not! The same is true with homosexuality.