That was a question that entered my head during my weekly tennis session yesterday. Within 10 minutes of the start I seemed to be aching everywhere. And that little voice in my head said "stop doing this. Sit on the settee, watch television and eat loads. You know you want to."
"But no way little voice in my head. You will not tell me when enough is enough." And of course when I am truly too old to play tennis I will just invent a new game. Zimmerframe tennis.
One of my boyhood sporting heroes has passed away. Ted Dexter was a swashbuckling cricketer who I used to love to watch. Along with Basil D'Oliveira, he was my favourite England cricketer - a real entertainer. He was always known as Lord Ted because of his upper crust leanings.
I guess that today Joe Root is the hero for many schoolboys and girls. As I begin to write this I am watching him yet again put the Indian bowlers to the sword and approach what could be another century.
My ambition when I was about six years of age was to ride speedway for Norwich Stars. Only two things went wrong with that ambition. Norwich Stars went into history when the Firs Stadium was closed and replaced by housing and secondly the fact I have never ridden a motorcycle of any kind and never had the wish to do so.
As a petrolhead I'm a non starter (if you'll pardon the pun). I don't subscribe to the usual male stereotype. I don't get drunk as a way of relaxing and I know nothing about cars, nor do I have an interest in them other than as a mode of transport.
My grandson cannot understand how I can't tell a Mazda from a Mondeo or a Goldwing from a Grenada. My granddaughter thinks I should buy a Nissan "one of those where there's no roof granddad," she says. "You mean a convertible" I reply. So maybe a trip to the garage is needed after all.
Today we have a scheduled visit to Cambridge. Hopefully tomorrow I can bring you some pictures of the dreaming spires.