Ask HN: How much of pay cut would you take for a more fulfilling job?

I'm at that point where I'm considering changing jobs. After a string of trampoline-like moves from one place to another, I quite frankly feel I'm only doing it for the money. As I search for options, I realised jobs I would find more fulfilling typically pay between 30-40% less. Still have not decided what to do.

What pay cut would you accept to do something you like?