A sad day indeed, I remember taking that decision last year, I took myself off the road because I would either have to drive under the influence of painkillers or drive under the influence of pain, the latter being something that will distract you to the point of being as safe on the roads as someone who is drunk.
Still have my licence, still allowed to drive, I decided I wasn't "safe" any more and there's no point in having a car if you're barely able to drive it.