Many FIRE devotees are too focused on
escaping work, and don't have a clear plan of what they're going to do with all that time when they get there. Once you have the position of strength in negotiating your working conditions (FU money), you can work fewer hours, at better rates, with people you enjoy associating with. The most powerful bit of the FIRE strategy is "save most aggressively when you're young so that it has more time to compound." Get that step sorted out, and then you have the freedom to choose between RE, or working more and getting rich.
Retiring early makes sense if you have a vision that requires
maximum flexibility and time off. If you want to backpack around the world or homeschool multiple children, that's a good reason to retire. If you want to reskill into an entirely different form of work (or take on work that isn't as lucrative), FI buys you that freedom, but you're still likely to be earning some money. If you just want to travel, hike, or hang out with friends more often... you can do all those things while you have a job. The problem preventing those things isn't work, it's internal.
As far as environmental costs are concerned, there are a lot of things you can spend more money on that aren't imposing any environmental costs. In fact, a lot of fancy expensive things can be better for the environment. Get richer and you can move to a more expensive walkable neighborhood. You can pay a premium for things that were produced in more sustainable ways, or were made locally and didn't need to be shipped across the ocean on a carbon-belching container ship.
I think FIRE had it's moment, and most people realized that FI is the best part, and RE is only really worth it for
- people who really, really hate their jobs, or
- people with really clear (and generally somewhat eccentric) visions for what they're going to fill all that time with
.
For most people who achieve FI and don't want to live in a van or run a weird Catholic/Mormon homeschool operation, the real path to living your best life is to use that leverage to
- downshift into some kind of related work role with fewer hours and greater flexibility, or
- take on some other kind of work that provides lower compensation, but is deeply meaningful/enjoyable.
Work gets a bad name around here, but the idea that work provides a sense of meaning and purpose is not something to be scoffed at. There are lots of great jobs in the world. Once money is no object, it becomes a lot easier to get one of those desirable and competitive jobs. Lots of people are attracted to FIRE because they were pushed by financial desperation into jobs they hate. Well once you're not financially desperate, you can get a job you don't hate. For the big FIRE content creators, they found flexibility, reduced hours, and sense of purpose in providing educational content on the internet about lifestyle and personal finance. Now they're trying to figure out what to do with that money.
I think FIRE is attractive to people who received lots of guilt/shame messages about money as children. If you were conditioned to believe frugality is a virtue and opulent spending is shameful and/or stupid, and then you grind your way through school to get a high-paying career... Well then the FIRE approach lets you exemplify those "virtues" you internalized as child without ever confronting the internal scripts around scarcity. Then someday you realize you're rich and you never exercised the muscle of spending money well to make your life more beautiful. Will second
@BeanCounter that Ramit Sethi's stuff is a great counter-balance to the scarcity mindset.