Short version: fired @ 40 years. I use a SWR of just 2% (basically the dividend yield of VT) since I am a very risk averse person. Retiring at 40 was somehow always a lofty goal that I had in mind but somehow it took the mental stress of Corona and the pain of endless video calls to actually resign.
The main driver for me to FIRE was not so much my tech salary (which increased nicely but still) but the strongly appreciating equity grant. I worked for my last employer nearly 9 years and the company value went nearly vertical ever since.
On the spending side I was always extremely careful with my expenditures (especially recurring ones) and was always staying WAY BELOW a level that I could afford. So fairly old car, small apartment, etc. I actually almost forced myself this month to actually spend a few thousand bucks on “fun” items like a big new OLED tv, etc.
I am currently 80% invested and the rest is held in cash (mostly USD and CHF). I am selling put options (SPY; 20-50% below current prices; expiry 3-12 months out) using my spare cash as a guarantee. That allows me to generate roughly 2-4% interest per year on that portion of money (key is to sell those put options after a few day of market losses like the last two weeks – that ensures that VIX is high / put prices expensive). It will also force me to enter the market whenever there is a major market dip. So indirectly I follow this strategy / allocation: https://www.wertpapier-forum.de/topic/59377-ultrastabilität-nach-andreas-beck/
My biggest worry was that I will be bored with so much free time but reality is that there is always something to do/fix/visit/read/etc. Overall very happy with my decision 