Geriatric drivers!

I have been driving for over 50 years and never had an ‘at fault’ accident. And no I am not that guy on the M1 driving at 40mph.
Neither am I the best driver in the world but for my own peace of mind I have completed an oldies’ fit-to-drive test and was complimented on my ability.
There are so many really awful older drivers on the roads that I think there should be a compulsory retest(s) for drivers over a certain age. I doubt that many would pass first time.