If you buy a $100,000 brick of gold, you have 1) the cost of financing that you pay on the loan, which is almost risk less / guaranteed to be there. 2) You have the added risk of what happens to the value of the gold - could go up or down.
Net Present Value of your "asset" with its associated risk and costs can be factored into what you really own / what your real net worth is.
Owing an airplane by financing an airplane will therefore reduce your net worth unless the appreciation overtakes the negative NPV. You might get lucky. Or not.
Net worth is simply what you own, minus what you owe.
When you bought the brick of gold or the airplane, if you can sell it immediately for the same price, your Net Worth remains equal. This leaves out liquidity — maybe you can’t sell it immediately and it’ll take time. Doesn’t matter if it still sells for what you bought it for. Net Worth still remains the same.
Now if you bought a brand new airplane and by switching from new to used it lost half of its resale value the day you flew it home, in your scenario now your Net Worth is 50K lower.
Risk really has nothing to do with Net Worth other than as a forecast maybe. The chances something goes up or down isn’t part of the calculation for Net Worth as it stands right at this moment. You can guess at values of things and get an ESTIMATED Net Worth (probably the word that is missing) but only a real number counts.
Something like an appraisal on an asset gets that estimate as close as possible — and one can determine if it’s “close enough” to make decisions from or if the market for the asset is too variable (risk) but not truly know exactly what Net Worth is.
I know roughly what my house is worth by neighborhood comps and such. I can ask a Realtor to look and get closer. I can hire an inspector and appraiser and get closer. But until it sells I’m just in the ball park on Net Worth. Probably close enough for big picture work.
Same with cars, household belongings, whatever assets one has.
If one “owns” a house truly worth say $500K and has a $400K loan on it, Net Worth is positive $100K from that asset. They also “own” the risk of default with that loan.
If that same house is “owned” with no loan, it’s a positive $500K on Net Worth.
And of course reality applies here also. “Own” is in quotes because until you have the title in hand, you don’t own anything. The bank owns it. Can call it a lien but that’s just semantics. You do however get to sell it if you like if you want to do so to pay them off. They retain approval on selling short however, which prints you’re just their caretaker. You sell short without them changing the deal, you still “own”
a mortgage and no place to live.
But Net Worth doesn’t change because you bought something unless you know it can’t be sold for what you paid for it.
Now what would really be nasty is if you bought a house and the loan terms say you pay all interest no matter when you sell. Then you’d be going immensely into the hole the second you signed. As it sits today you go fees and points purchased up front in the hole. So there is a minor Net Worth hit left out of the simple version above. Another area you get constant nibbling at Net Worth is PMI. Especially now that it’s usually not removable at 80% LTV like it once was. A constant drain on capital paying for someone else’s insurance you receive no value from whatsoever.
Anyway. All of the above plus more I’d say is why looking at Net Worth or Estimated Net Worth isn’t a great way to assess any purchase. The balance sheet is more direct and a percentage of income for all aircraft costs from acquisition through maintenance and operating costs, is probably as useful or far more. Low or high Net Worth doesn’t really become the limiting factor.
Second limiting factor is risk. On aircraft the risk that’s the highest is a loss by damage — mitigated perhaps by insurance at additional ongoing cost — or mechanical failure that costs most of the value of the aircraft, or goodness forbid more (totaled by maintenance costs).
Net Worth is waaaaaaay down the list of deciding factors. To me anyway. YMMV.