How old is TOO old??

A former colleague at Boeing is 86 (I think). He isn't an RVer, but he's still flying his 1955 Beech Bonanza all over the place! A lady member of the same group in the Octagenarian Flying Club learned to fly in her mid-70s and still flies all around the country in a Piper Cherokee visiting friends and family. She traded in a high-wing Cessna 182 for the low-wing Piper because it was hard work climbing a ladder to check the fuel at every pre-flight check.

I don't think giving things up is age-specific if you're still able to do them. Some insurance companies probably disagree!