I kinda wish I’d become a Vet. There would definitely be huge job satisfaction from being a Vet or an MD. After 10 years in finance, there’s only so much satisfaction a nice salary provides IMO.
Personally though, what I like most about these kind of professions is the fact that I wouldn’t be so tied down to “financial” locations (i.e. New York, London, Sydney, Hong Kong, etc). I wish I could just live anywhere. The pay has always been good in finance, but the associated costs with living in a financial city are always sky high (i…e a back-breaking mortgage). Being a doctor or vet, you could just live anywhere.