When I was a child I often thought about this question. Sometimes I wanted to have ability of flying. I felt this state in my dreams. It's amazing to be like a bird when you feel this perfect sense of freedom. Sometimes I wanted to be the most strong and powerful man in the world for eliminating bad persons. But now when I grown-up I understand that the most useful superpower is power of healing. There are many people everywhere who need help and in many cases nobody can help them. There are mane reasons of it - lack of money, weak level of medicine and unfortunately indifference... In our time people become more and more indifferent to each other. So I would be glad if I could help them.