Bazza,
Other pilots are the ones comparing themselves to doctors. I beleive that it's a bit fanciful to make that comparison. Medical doctors have to do a long stint at uni (5 years I think) and then two years of residency and after all of that try to get access to a college. GP's, Surgeons, Anaesthetists etc. If they get into a college then a few more years of training and maybe then they can relax. If your lucky you will be finished by the age of 30.
If you dont make it through residency or college training you can be a supervised hospital doctor or you can go into research, administration etc.
If you dont make it into the cockpit with your 100k CPL yoy have far fewer options.