This.
It would be pretty silly for a +$300 million lottery winner to go forth to practice medicine...mainly because, whatever argument in favor of the decision, it could be challenged (and likely defeated).
"I would practice in order to help society and my future patients!"
-- No, you could help society exponentially more by being a full-time philanthropist and letting one of the [equally qualified] other docs help your would-be future patients.
"I would practice for self-fulfillment, there is nothing else I would rather do!"
-- Really, young man/lady? Remind me, how long have you been practicing medicine to know that you would prefer nothing more? How many times have you tried every other possibility on earth in order to be certain that you don't prefer XYZ as a means to spend your time?
"I want to be a doctor still because then I can cure cancer!"
-- No. Just no.
...and then there is that little fact that you will be undoubedly jaded when every single patient tries to sue you for malpractice since it won't be a secret for long that their "doctor is worth +$300 million".
Come on, people. There is nothing wrong with being bright eyed and bushy tailed, but this is ridiculous.
So, no, I would not go forward with becoming a physician. However, I would send a big fat donation check (along with my withdraw letter) to my would-be medical school prob in the 5-10 million range. 🙂