I think there's an assumption by some that saying something is inborn automatically means that it's okay. This is not being said at all.
Here are some inborn tendencies. Is acting on them okay? Some yes, some no. It's the nature of acting on it that determines whether or not it is okay.
Lefthandedness, acting upon it is okay
Righthandedness, acting upon it is okay
Heterosexuality, okay
Homosexuality, okay
Pedophilia, not okay to act upon
Quick temper/ murderous rage, not okay to act upon
Psychopathy/ lack of empathy, not okay to hurt others
Why are people getting so upset about trying to discover the origins (and thus prognosis) of these conditions? It's the behavior that should be judged and understanding the origins can help find ways to prevent negative behaviors.