IMHO the older a person gets, the younger their definition of old age becomes. When I was in my 20s, 55 looked old. Now that I've reached the latter, 80 and above looks aged. The news media around here refers to folks' over age 65 as being senior citizens. To me, those in their 80s and 90s are seniors. Back in my youth, this 80 and 90 group would've been acient. Now? Not so much!