Hmm... is it selfish to want to cure a disease? Is is selfish to want to be able to wake up in a morning, look in a mirror and be happy with the reflection that looks back at you? Is it selfish to want to avoid the feeling of not belonging anywhere, of not fitting in anywhere because how you're expected to act based purely on your external physical appearance is totally at odds with how you feel you should act based on who you are as a person?
I would think... that a person who has transitioned to become someone more confident, more in touch with themselves and more able to accept themselves... would be better placed to focus on the issues of those they care about instead of having to constantly deal with the all-consuming anguish of being stuck as someone they cannot accept.
The gender dysphoria itself, in my opinion, is selfish... in that it invades every part of a person's life; colours everything they do, say and think, and makes life difficult to the point that it's all someone can think about.
So taking steps to remove the condition, rather than being selfish, will allow freedom and the ability to look outwards, to others, instead of constantly inwards. And that, in my view, is a pretty selfless thing to do.
