My luck is that there's still a lot that interests me in tech, like datalakes, data intensive systems, OTP and webdev with elixir and phoenix, compilers and micro vms...
For me it's an easy answer, I can use tech to finance my true purpose. I'm also lucky enough to live in a country where 66k USD affords me a very comfortable life.
For you there seems to be something more fundamental missing. You seem to be in the start of a journey inwards to understand what's your purpose, what could fill the Ikigai for you.
If you have money, take a break, travel, go meet people, broad your possibilities. The world isn't just SWE, specially silicon valley cutthroat morally-bankrupt SWE. If you immerse yourself in the world out there there'll be no guarantee you'll find what you want and there is a good chance you'll suffer, but it's likely you'll find something, and that I think makes it all worth it.