I don't think becoming a doctor or a lawyer are easy or low-risk. You have to go through years of school after which you are faced with a high probability of being unemployed. If you do find a job, you're likely going to work a crushing number of hours.

Isn't the lawyer profession way over-saturated right now?

In one sense, yes. On the other hand, many people take law degrees without any intention of working directly as lawyers, so "it's complicated"

Really, it doesn't make any sense to lump the two careers together (at least in the US), anymore.

What if your 'risk/reward' was based off 'happiness' instead of financial gain?

I know I wouldn't be able stomach a 5+ year law degree and practice law for the rest of my life and be happy. I'd rather do something with numbers.