Well it's possible some of these people aren't always as go getting as they appear in the photo they choose - people are probably trying to look as interesting and attractive as they can.

That said if you are looking at younger women you will probably find they are more active, whereas you sound pretty typical for a retired guy in his 60s. Nothing wrong with that, it's who you are, I'm sure there are women out there in a similar situation who would be compatible with you.