Honestly, medical school is intellectually easier than a compsci degree, even if it takes more time and more rote learning. My friends who are doctors tend to have terrible work schedules which they can hardly escape, on the other hand.
Not that this actually matters a lot in compensation, given that in the circumstances it probably doesn't have a lot of effect on the supply of doctors.
I actually did the reverse (decided that I wouldn't have been good at actually being a doctor, dealing with patients, etc.); I happen to still help friends with exams and, well, there is basically nothing in there that is harder to understand than the first year calculus exam that you have to take in a computer science or engineering course. You need to acquire a working multi-level understanding of very complex systems, but I have found the chemistry->biochemistry->cell signaling and regulation->tissue etc. chain more intuitive for most people than the electronics->system architecture->machine code->programming language-> etc. chain. I'm interested in reading what made you feel that the opposite was true; maybe the issues with incomplete understanding of many processes that pop up in medicine?
