Imagine being forced to go through a "introvert deconversion" program where you have to read essays and do exercises that are designed to "help" you become an extrovert and shed your "shameful" and "perverted" introvert ways. LGBT deconversion is a far worse version of this.
There are better, more accurate, words to use than violence.
Quick note: I'm reading your post in the most charitable light and giving you the benefit of the doubt, a less charitable reading would be that you're ok knowingly coopting a word because along with it comes a whole host of legal and ethical implications that you want to bring to bear on something that you don't like and you know that it isn't violence. I don't think you are doing this but noting it for others that may be.
Living in a free society means that not everyone has the same ideas about values or psychology or religion. These things will be debated long after we're all dead. Until every disagreement is resolved, the best solution we've come up with is tolerance. If someone is doing something voluntarily that's not significantly hurting you, even if you don't think it's a good idea for them, you're usually better off shutting up and ignoring it.
The last people I want making these decisions is the company that makes my mobile phone operating system for god's sake.
There are such programs and exercises. They are just not called that.
Surprisingly, not really. They'll endure torture in hell for the gay sex, but not being gay per se (note that but so will everyone who masturbates, or marries a foreigner, or wears clothing with mixed fabrics, or, according to Revelations, most Christians.
My underlying point would have been that the Bible considers the act of gay sex a sin, but sex between people of the same gender wasn't necessarily considered deviant in many ancient cultures (such as the Greeks.) The concepts of "heterosexual" and "homosexual" identity, or of "being gay" would have been alien.
Straight people don't need help accepting their straightness anyway... heteronormativity is already the universal cultural norm.