What is most rewarding about being a hair restoration physician?

DR. TRUE tells the story of a very active, competitive man playing sports at age 77 with men in their thirties and forties. Probably somebody who's going to live another good 20, 25 years. He'd had both of his hips done, so he could keep playing competitive sports. He lost his hair in his twenties, and he hated it. All of his life he hated it. It was just something that just bothered the heck out of him. And finally, at age 77, he got it back. He was like a kid. He said, you can't imagine how much this means to me. So both ends of the spectrum, and everything in between.