You could simplify it a bit by setting a fixed (in fiat) amount of extra money to spend, or not spend. If you really want to unreasonably spend everything in your lifetime, you will need either an estimate of how much time you have left or fudge it a bit more, then divide your corns by that number of years, and you have a maximum number or ceiling to liquidate.

A nice number to assume would be 30. Since , as you know, plenty of sources say 25x of your annual expenses and in theory you should be able to live on 4% of that for the rest of your life.

So, if you have say, 300 corns, then divide that by 30, that means you can probably spend 10 corns every year, and you'll be unreasonably spending everything until it runs out. It will take 30 years to deplete, and as the price fluctuates, goes up, or goes down, probably going up for the next 30 years, you'll end up with more fiat than you know what to do with.

Imagine being "forced" to spend 1 corn a month for the next 30 years.

If you're still alive in 30 years, you'll either run out of corn but have a lot of fiat, OR you didn't spend all your corn and can keep drawing on it.

If you're not already a billionaire, do not get a private jet. You will need more than the price of the plane to pay for it, maintenance, expenses, a full tank of fuel everytime you fly, salary for your pilot, all sorts of paperwork. I think flying first class or even business class, when you do need to travel, is quite okay with a lot of people already.