I used mousse for a while when I was in high school and later switched to gel. I stopped using the gel when the hair got too thin. In fact, I knew my hair was getting really thin when I would get a haircut and then apply the normal amount of gel only to find that it was waaay too much.
I had really thick hair but it wasn't the type of hair that styled very easily. Back in the day, you never would have convinced me that I'd prefer being bald but I'd never want to go back to the days of shampooing, conditioning, blow-drying and gelling.