I think FIRE is silly. Financial independence or freedom is not. But the retire early part is. The time value of money makes retiring with 30 years or more years ahead naive.
1M now is worth about 400K in 30 years.
That’s not to mention all the other things that can happen in 30 years.
Some people say they supplement doing X. Well that’s good. But then you are not retired.
There’s also not what are you retiring from. But what are you retiring too. For me, my interests certainly have changed over 30 years. Retirement hobbies can be expensive.
The whole thing of retire early is just silly.
Now Work Optional. That’s worth striving for.