Recently, a radio talk show host mentioned how strange he felt having guitar lessons with a 24-year-old instructor. I understood what he meant. Logically, if someone has a skill you don't have and is able to teach it well, that person's age shouldn't matter. In an awkward way, it does, however. A few years younger isn't a big difference, but when the teacher is decades younger than you are, it feels odd to regard that person as an authority figure.
At age 55, this perspective is inevitable, I think.