Ideally you die with $0 left. As the philosopher Karl Pilkington once said, "The only reason you need money is in case you don't die today."
It should be more than a "hope." If you really retire (and really plan to never work again), you should have some reasonable confidence that you will never run out of money. Having 25x to 30x current expenses saved and invested is a good starting point.
I did have ~40x my monthly expenses saved. I just spent them over the course of about 40 months!
I had no illusions about not working again, but I did do what retired people do: whatever the heck I wanted!
x is usually years, not months. I think that 3-4 years is closer to a long sabbatical.
I don’t think that changes my original point that if you find freedom to do whatever you want “dull” then you are the problem.