M.J.
I could have written Kristen's same response verbatim. Seriously, I'm 34, one of my closest friends will be 50 this year, I'm about 12-15 years older than almost all of my co-workers who are also some of my good friends. My older friend says that I'm one of the wisest people she's ever known, and I do catch myself telling some of my younger friends just how young they really are. I think it's good for you to have friends from all different ages &/or walks of life, it helps give you perspective!