Why do some older people on here feel the need to use age as an excuse to gain superiority over younger people?

I would have to agree with the others who have said that it's probably due to insecurity, and that's all they've got left to make themselves feel better.

I hope you don't mind me sharing this quote that I just saw. I need to remember this myself, as I know just enough to know that I still have a lot to learn.

“To learn is to be young, however old.”
― Aeschylus