So why wait until retirement to start seeking them?
> Working is slavery, however you want to slice it.
This is a thought-terminating cliche. Slavery is slavery. Working is an arrangement you enter into voluntarily with a series of pros and cons for all participants. Is the CEO if a company a slave? The researcher who finds a cure for a disease a family member died from? A musician in a touring band? An author with a book deal?
It's your life and I respect your choice to live it how you want, but if you have an idea that work is a thing to be suffered for as little as possible until you reach payday and then you retire and your real life starts... you are almost certainly on track for a completely miserable life both before and after your retirement.
Take a look at the kind of people who have the greatest life satisfaction. How many of them went down the FIRE path versus building their entire life in a meaningful way?