Personally, I left tech in large part to become a therapist doing psychedelic-assisted clinical work when it becomes legal. It really does seem like it can be a potent tool for relieving great suffering. You can read a little about my story here: http://glench.com/WhyIQuitTechAndBecameATherapist/
I have a bsc. in psychology, so partially already there to become a licensed clinical psychologist.
It'd be one hell of a career switch though. I guess, so was yours :)
Edit: I just read your blog post about it. Damn! This is illuminating. It'll definitely help me in my journey. Thanks!
Also, definitely envious that you got to work with Bret Victor. A few years ago, I really wanted to but given I'm from the EU and he didn't seem to be looking, I never messaged him. I think I should have.
@haswell I read your comment. I'm happy to know that as well :)