I respectfully disagree. Even if you told me that you felt like working at the UN was a waste of time, I’d still tell you that at least you contributed to a historically unique global institution which at least strives to bring people across the world together.
Bitcoin was just a waste of talent and resources.
Half the people here work for random SaaS and socially corrosive companies like Meta that have literally helped install dictators into power
You could do worse than building crappy blockchains
You touch upon an important point: the entire foundation of our current economic system is built on high velocity of money. You are incentivized to spend rather than hold because without it, there's no mindless conspicuous consumption. A deflationary currency will grind this system to a halt
But the question you need to ask is: has all this mindless consumption really done us any real good? For the handful of genuinely useful things to come out of excessive consumption, there are a gazillion pieces of wasteful crap that clogs homes first, then landfills
A deflationary currency is bad for the current economic system. But that doesn't mean it's bad by itself.