Earlier quoted context omitted.
I'm actually living on 15k per year right now. Free time + stuff to do + safety net + support family = ~100k per year. YMMV. But thanks for the good news anyway. :)
It would be cool to learn more about how you budget it, assuming you pay for some kind of housing. My rent is more than $15k/year.
Short answer: we live in a spacious dumpy place a 15 min walk away from Davis Sq (Boston area), have shitty health insurance, rarely use a car, keep the temperature low (read: cold) in the winter, don't go out to eat much and cook our own healthy food from the grocery/bakery. Despite all this, we still live like relative kings.
It's sort of cheating though because in terms of clothes & tech I came to Boston with everything I need so I spend literally no money on them now.