Here's some fun facts for the two of you (and everybody else): In a study of the effectiveness of HRT, more than 9 out of 10 trans people said that they were at least just as happy with their life, if not happier, after they started HRT compared to before. By comparison, antidepressants have roughly a 45% success rate. And of the respondents who had stopped HRT, the majority of them cited reasons outside of HRT as the reason that they stopped (social, financial, and safety reasons largely), and that most of them intended on starting again as soon as they could.
This gives HRT one of the highest rates of success and long-term patient satisfaction, and one of the lowest rates of regret, out of any medical procedure ever.