2 out of 23. Though using the term mid life strictly, that is = half way through, I can expect to live to 124. Falls into the fairly unlikely catagory methinks.
It seems to me, what is often identified as a mid life crisis is useually some sad b***gar who never enjoyed life anyhow trying to be superior about someone (like me ) who has simply never stopped enjoying exciting stuff like 500bhp just because of increasing greying/hairloss (in my case both!)