What made you leave your comfortable tech role?

I've often wondered what it would take for me to leave my current, cushy, position at `big tech`. When I say cushy, I'm talking about the stereotypical tech role that you could coast on for 15 years, live a 1% (globally) life, retire early.

Every so often an interesting role comes my way, but it's never been "enough" (pay, prestige/title, lack of risk, and so on) for me to seriously consider changing paths.

I'm interested to hear everyone's story; so, why did you leave your similar-sounding role.