Unless your physical abilities are compromised I can't really relate to age at all at either end of the spectrum. It annoyed me when people said I was too young to do certain things in my career (I ignored them) and more advanced age as a barrier per se annoys me now.
I bought my Second Caterham when I was 53 and an Elise when 57. Equally I wouldn't just avoid an XK8 because it's known as an "old Man's car" - I don't give a damn about all these labels.
Neither did it bother me that I once had an orange 2CV. Our Regional Director was on a visit of the area - I was the local Branch Manager in Bermondsey at the time. I bought the 2CV because I felt I could park it anywhere and no-one would nick it . Various people told me I "couldn't possibly take him on a tour of Docklands in the "that" (the 2CV). When I did so, the aforesaid Director said it was the most fun he'd had in a long time. Some years later, when I took a dodgy stress-related turn in my career and wanted to change direction massively he was the one who helped me do it.