Many of us report feeling much better once we were on HRT. I never took any anti-depressants, but I did have a depressed mood all the time. People said that I never smiled. Now that I am taking Estradiol, I am just fine.
Polly questioned if this mood change is delusional. Although there is not many controlled studies on this topic, too many of us MTF have reported the loss of the depressed feeling that goes with gender dysphoria. We are willing to live life again. In my experience, my feelings are definitely not delusional. They are a real improvement in my quality of life. Keep in mind that while many of us experience this improvement, any of us may have other issues which still require anti-depressants. As the causes of our depression are removed from our life, many people find that less anti-depressants are needed.