Sounds like you're doing some form of financial independence, retirement early (FIRE). Congrats! A coworker did that a few years ago and it was eye opening.
I've played around with a retirement calculator and it looks like 55 is going to be my first reasonable chance. I live in mortal fear of running out of funds. Who knows how long any of us has, but it would be terrible to be upper 80s or 90s and penny less.