First of all, I strongly oppose the use of the word "cure" in this context, for the record, even in quotes. Homosexuality is not an illness.
I am suggesting that there is no reason to discredit research in this area if it may be of strong psychological benefit to some individuals. It is wrong to suggest homosexuality needs "curing", as it doesn't. But there are people who might choose to benefit from the ability to change their sexuality.
I don't believe that any particular area of medical research (much of which occurs commercially) should be branded heretic just because the concepts to be explored are misused by some. That is the point I am making. What if, for example, someone is unhappy being gay because they wish to have a family by the traditional method? Yes, they can adopt, but so can straight couples who have difficulties having children. Should we also block IVF and similar?
Yes, there is a risk posed of people being pressured into taking treatment when they do not need/wish to - but it's that, and attitudes surrounding it, that need to be fought strongly. Not to hide areas of possible future medical research just because some people don't like them.
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They have - and so have all manners of medical treatment in all those areas for all manners of things. That's why we have medical research. It finds new treatments and new methods, and some of them are found to be successful.
Just because a medical method of changing sexuality doesn't exist now doesn't mean one won't exist in the future. And it certainly doesn't mean it shouldn't exist, if there are individuals who may, for whatever reason, benefit from it as an individual (again, not because of others, because of their choice). And who's to say that some may not choose to become gay, if that is their wish? Or that, for example, a heterosexual transgender male who feels for whatever reason they should actually be a woman decides to also change their sexuality as well as having a physical sex change? Who am I and who is anyone else to tell them they can't, if it becomes possible?