Money is the best freedom buyer. Don't trust anyone who says "Money doesn't buy happiness". That's rich-people propaganda to keep the rest of us dependent.
As Lucy Liu said in a fantastic interview: Do everything in your power to accumulate fuck you money as early as possible. Because then you can say No.
Even a few months of buffer is enough to buy lots of wellbeing. Having FIRE money is obviously even better.
Money clearly matters a lot, though. Why? Because we live in an objectively evil society—an oligarchy that has no language but money.