I initially wanted to quit ASAP and was going for lean-FI at $20k/year, but ended up negotiating a sweet deal and working a 2 years longer to get to $60k/year from investments with the 4% rule. I still only spend between $20k - $30k/year so I have plenty of room to increase my budget.

I just quit a few months ago so we'll see how not working for money turns out long term. So far it's been great. I've been pursuing my hobbies, volunteering, and doing some very light consulting (0 - 2h/week). In other words, I still do plenty of things, it's just that I don't get paid for them and can do them fully on my terms.