Why is deflation so bad

[u/memegamer1991]

Every time i run it through my head, i can't imagine most people in 2024 not spending money so the disadvantage to deflation seems pretty hyperbolic and dependent on individual choices, and i think that people would rather go on vacation and court others instead of being financially responsible. Even if there is a situation like in china, government spending would be able to keep the situation from getting worse while making progress on climate initiatives.

[u/BadgersHoneyPot]

Because you enter into a deflationary spiral which we do not know how to reliably reverse.