Great posts lately in this thread.
I'm 34 years old, expenses at ~4.6% now, I'll probably take a long break in a year from now, at which point I'll be <4%. Sometimes I wonder if this "rush to FIRE" goal is obsessive, as the projects I have in mind most likely will last a couple years. What am I going to do at 40, 45, 50, 55? Chances are, I'll be craving some productive paid work and/or want a routine with a family. So maybe my present time would be better spent taking care of this sabbatical sooner than later. I'll see if I can get a short leave until next year's date.
Another thing I realized, like some posters above, is that 10-15 hours/week of work can be more fun than 0. And, in certain circumstances, if I have full control of my time and work environment (remote, independent work) I actually enjoy 40+ hours. So, no doubt I'll find a way to incorporate those in the future as well.
Even though I'm way past FU already, I have this fear similar to "inner-bag lady" (I'm a guy), maybe "inner-bum dude" who'd get lazy, on drugs, dirty, stuck in a poor country partying, ruining my life...