Thanks for posting!
I like the tools available here:
https://engaging-data.com/early-retirement-calculators-and-tools/
Particularly the “Rich, Broke, or Dead?” simulator and visualization.
But if you have a mind for numbers, you will often get the best results for your use case by modeling it yourself, as you mentioned.
Agreed. By OP’s definition I’d be in the upper class, but I would actually consider myself upper middle class. I’m comfortable, but I’m definitely not wealthy. Wealthy means labor is optional and you’re leading a comfortable life.
Security is a component of wealth. Security for me means I don’t care if I have a job or not, and losing my job doesn’t mean I’d lose my house. I’m actively working on that, more so than FIRE itself.
In other words, zero debt and low monthly expenses is more important to me than retiring early, because then I know no company can ever again have leverage over me.