For the same reason you find it difficult to ask for what you want, or difficult to accept your own better qualities. I know what it's like to not want to be alone with my own thoughts, I'm not surprised you avoid thinking of yourself.

I am unfortunately not so selfish that I'll ask you to heal them because I want you to go to the hot springs with me, or the naked dance parties next to the river. As much as you indulge my selfish desires, even you must have your limits. I hate how I feel compelled to be honest that the reasons I wish for you to heal are not solely for your own benefit, although my belief that it will help you move past what you were and grow is genuine.