Too old for it?

[godivacub]

At what age would you say someone is too old for sex,70+ and so on perhaps? Do we really have a sexual expiry date or are there folk who would say if they still look the part and are up for it as long as they dont get worn out in 1 minute then why not! Is anyone really too old for sex? How old would you be prepared to go with an NSA partner? Perhaps someone can be too ill for it but never too old for it lol. Please share your thoughts.