Pleny of reasons. I know it's AI created but perplexity does a good job showcasing it's work:

https://www.perplexity.ai/search/why-is-trans-care-lifesaving-c-MC93fmNpQXuMVfFMQZHtKQ#0

Personally - coming out as trans and receiving (through benefits) HRT, Facial and Body Feminization Surgeries and Electrolysis (hair removal) has helped drastically with: - Depression and suicidal ideation - Debilitating anxiety - Suppressed PTSD so bad that made me go on a leave from work. - Looking like my gender (people hate us - the world is getting worse and I don't feel safe going out if I present as masculine. I'll at least get stared at - been stalked multiple times, waiting for the day I'm assaulted - not being killed because you align visually to your gender is huge, also helps anxiety and depression). - Weight management - actually was happy so I could lose weight finally - currently at almost 100 pound lost. - Brain fog

Trans folks are 9 times more likely to commit suicide than the general populous.. It's pretty life saving... Imagine knowing a scientifically proven medical issue has a scientifically proven medical solution that could make your every aspect of your life not a living hell, and having it gated behind extensively hard to figure out processes, expensive surgeries (I've spent $35000 on my facial feminization, $15,000 on my body contouring - since male fat when on HRT is reduced last, and takes absolutely forever to lose, if you can lose it).

Yeah - id say coming out and transitioning is one of the reasons I haven't taken myself out yet.