“What I’d like is to

[NotCranky]

“What I’d like is to understand what could happen to all of us who end up seriously upside down in our houses. Those of us who can make the payments.”

You will lose money “on paper” if you stay.
You will have opportunity costs that aren’t the kind you want but that you can ignore if you want to..

You will pay too much for your house.
(You can be glad you did not buy a 2 million dollar house.)

Life will go on and you will enjoy much of it.

OR you could try to sell now, but in theory you are already upside down and would probably have to bring money to the escrow closing, maybe not.

Thanks for being honest and asking.
Best Wishes