other than lifestyle, what do you actually want out of your career?

To be remembered for doing something, for creating something. I was thinking of research.

Is there anything about any field of medicine that you like and would feel good about doing? Do you have a particular compassion for any subset of patients you'd be interested in working with, or method of diagnosis that you find interesting?

Yes, psychiatry but I do not like the social stigma involved in it. Is there any field that studies consciousness? Would that be under Neurology? I would like to do research in Consciousness

If you truly want to go the IB route because you care about it and you are motivated to work hard because of the work itself then I wouldn't think twice, just go for it. But toxic/malignant environments exist in EVERY field, especially IB- and if that's the only reason you want to switch out of medicine you might want to re-evaluate.

I heard it gets better after a while (the toxic environment).