I'm over 50, but don't feel like it. One of the best things about being sly is that unlike other hairstyles, it fits any age!
Regarding age, my wife's grandmother lived to be 102 with her full faculties in place. When she was in her late 90's, she began a sentence with the phrase, "now that I'm getting older..." At that moment, I realized that age truly is all a state of mind!