In this case, Google is or should be your friend. Medical science demonstrates clearly and empirically that the reason people should not attempt therapy to change sexual orientation is that it is highly dangerous. People who choose to go undergo conversion therapy suffer from well-documented surges in mental health disorders, including suicidal ideation and suicide attempts.

The reason for this is that data demonstrate clearly that conversion therapy does not work, despite your anecdotal assertion to the contrary.

Practically every ex-gay Christian organization has disbanded at the behest of their gay Christian founders who admit that they were wrong, that they were unable to change their own sexual orientations or anyone else’s.