With modern life expectancy you, Mike, are now late middle aged. And there are still some good looking women out there worth chasing. You may be a bit slower but then again so is she. If you both do not run to far and to fast you should still have enough energy to have fun.
It will now take you all night to do what you used to take all night doing but you have had enough practice to realise that if you do it right once a night is enough.