A new mid-size jet will run you $10-20M.

Pilots and maintenance will cost you $1M+ per year. Depending on how much you use it, that could be significantly more. Spending 10-20% of your net worth on a vehicle up front + 1% pa going forward is not "comfortably afford".

If my net worth was $2M, I would not say that I could comfortably afford a lambo.

Don't buy a new mid-sized jet then...? You can certainly afford a small, used private jet if you have $100 million. Not to mention a lot of people that own private jets rent/lease them out, just like they do with yachts, which can help to offset a lot of the recurring costs. I know a guy that owns a relatively small business and he has a modest private jet (as modest as you can get while owning a jet) and he certainly doesn't have 100mm. Aviation is one of his hobbies, which likely plays into his decision, but it is feasible

Why buy a new mid-sized jet? I was responding to the comment that a $100m net worth can't afford a private jet, which is just not true. There are a LOT of options between commercial and a -new- mid-size jet. Buy used or get a brand new HondaJet for less than $5m. Can be flown by a single pilot and can fly anywhere in the continental U.S. with no more than a single re-fuel stop.

Or, fly anywhere in one swoop with a less than 10 year old Citation CJ4 or similar that will run you less than $6m and seat 10 passengers. And the annual operating costs will not get you anywhere close to $1m. Even a G650 isn't going to run you much more than $1.5m annually unless you are putting a ton of hours on it.

But I will also say that 10-20% of your net worth (wouldn't be up-front, it would be financed.) is not that big of a deal when you have a huge net worth. It's a lot when you make just enough to survive. It's not a problem when you still have enough left over for several lifetimes of comfortable living. Just depends on your priorities.

This is something silly one would do if they suddenly got a windfall - spend a chunk of it on a flashy purchase. You can just charter one for the once in a while you want a jet. How many flights is that, even for the 1M a year maintenance? Or fly 1st class. Or, you know, spend it on something that appreciates instead of losing value, like luxury real estate.

$1m maintenance is on the high end. Only a bigger jet would cost that much.

I agree that chartering is usually a better way to go. But private jet life is comfortably affordable at a $100m net worth. Maybe not private-jet-life, and mega-yacht-life, and rare-original-art life all at the same time. But you could definitely choose one or the other.