I know a bloke at the time he was in his early 70s,went to the Drs because he wasn't feeling %100 ,the Dr told him to go home and put his affairs into place,due to some med condition he found he had or presumed he had. this bloke went home but instead of getting his affairs put into place he packed his camping gear into the side car of his motor bike (Honda Goldwing )and hit the road. That was over eight years ago.After he road around Oz (two years ) he traded the bike and side car in on a small motor home and still travelling and never stepped inside a Drs surgery since that time way back when he was given the prognoses of not being around for all that much longer. Last time I spoke to him on the phn he was volunteering at the Transport Museum in Alice Springs.