Agreed. I'm quite content living a rather simple lifestyle, owning very few new things, doing almost of the maintenance on my belongings myself. The "magic number" was really more about giving myself permission than anything else.

The one thing you do have to factor for, though, is what happens if you don't keep your health. The thing that kept me in tech a little longer than I hoped to be there was a parent with long-term care needs. I could live a happy life on ~$2k a month, but it took five times that just to keep my mom alive the last few years of her life.

Living that cheaply does require adopting the lifestyle. But cooking at home or eating a casado from the local soda instead of a US-style restaurant meal sounds preferable to me anyway.