Maths (Stats/data science/analytics) vs Medicine (2 Viewers)

[Schmeag]

Medicine is challenging and rewarding, but as others have said, it's pretty easy to give up if the three points OP raised are sole motivators.

Money - there are plenty of regular fees doctors need to pay and even if you earn enough, you'll have precious time to actually use it
Prestige/fame - among family and friends, otherwise not much practical use
Security (worldwide) - Australian medical degrees alone are rarely recognised outside Aus & NZ without additional training

However, some of the examples here seem a bit extreme:

Working for free for 40 hours a week takes a toll on you, and doing that whilst dealing with the egotistical pricks around you makes it worse.

This doesn't seem within the norm - forty hours of actual work (excluding tutorials, lectures and all that tagging along) as a medical student in clinical years seems excessive, and probably not necessary if you are interested in psychiatry/rehabilitation/geriatrics/general medicine (or something else which has a psychosocial focus).

To be a good doctor; you need to give up your life
In 5 years time if you aren't doing that you won't get a job after 3 years out.

I don't believe this to be true. It shouldn't be necessary for a doctor to sacrifice themselves (however, some do) and while it's not a walk in the park, plenty of doctors manage to fit life in. Re: jobs, you will find a job, just not necessarily the one you wanted.

If you aren't willing to sacrifice your life for something you don't really like. Then don't do med. lol

Agree in that disliking medicine won't help with the mental fortitude that is required to be in it for the long haul.