You don't have to erase upbringing in order to "deprogramm" someone. Finding the root causes of the behaviour could potentially "deprogram" the desire by forcing the person to face the cause of the behaviour; not just reflect on the symptoms and know it's bad but not know why the desire is still there.
This sounds like a logical theory at a superficial glance, but I don't think it's that simple with sexuality. You are probably thinking along the lines of irrational fears that have been examined by hypnosis and then have spontaneously "resolved". Those types of trauma are a little bit different than something as basic and powerful as sexual desire.
When you were giving examples of choosing to be turned on by someone's ass, you have to see that all you are really describing is a FORM of that basic attraction that is individual in the way those tastes are expressed. The real hard-wire is the fact that you are interested in that particular genders ass at ALL.
We don't truly know where sexual desire comes from, but it's safe to say when you examine the (unbiased) evidence that we have to date, that it definitely seems to be innate and essentially unchangeable as to its natural response from someone. If you are homosexual, a man WILL turn you on. Period. Even if you fight it, you will see an image, a movement, or even a sentence describing something sexual involving a man and you WILL respond. This is unchangeable. This is completely different from action, we are talking about the ability to evoke a response. Like you said before, you never had desire for a man, and you never felt sexual attraction. Exactly. It isn’t THERE. That’s why you are straight.
I truly have no idea about pedophiles, but I would hope for their sake that it's NOT the same as homosexuality/bisexuality. Maybe there is something disorderly about the condition brought on by abuse, or brain chemistry from variables such as tumours. Who knows? It's still an open ended question.
But don't try to suggest you can change innate desires as basic as sexual gender preference. The evidence is far too overwhelming to the contrary.
You have to realize that most Christian "moral values" behaviour is not really about "protecting" anyone; it's about their desire to send a continual stream of messages of condemnation towards people whose existence offends them. - Darth Wong alias Mike Wong
"There is nothing wrong with being ignorant. However, there is something very wrong with not choosing to exchange ignorance for knowledge when the opportunity presents itself."