If Bitcoin goes to 0, I will buy all of it and display the Trezor that stores it in a museum
Gold has jewelry and industrial uses, but bitcoins are cypherpunk collectibles.
Maybe 0 isn't right for bitcoin but it is possible for it to go incredibly low and there are altcoins for which there isn't even any historical interest....
That is a crazy claim.
People still occasionally perform music from 2000 odd years ago, which I would consider to belong to a different civilization to our own.
A 5%/day sustained drop is enough to halt transaction processing entirely.
Often what happens after a massive price drop is people stop trading instead of a larger nominal price drop. AKA, you still get some high value beanie baby transactions, but the market is not large enough to really liquidate a collection at even close to the nominal clearing price.
It seems like the harder problem is convincing anyone else to pickup mining again on the other side of your "I own all the coin" transaction block.
So, unless you start over there will be transactions to addresses and you need to be able to correctly sign a transaction to your own address.
PS: Think of it this way, someone mining just one block can't make an arbitrary transaction from any address to any address.
Markets crash discontinuously. It was trading at one hundred, it was trading at one hundred, it was trading at 99, it was trading at 2. Go on GDAX and look at the order book. Lots of demand priced close together at the top of the book. As you go down, the bids are further apart.
As a first-order approximation, that's a decent view into what would happen if a massive bought of selling hit the exchange.
Some people would probably argue it's no longer "Bitcoin" at that point, but at least you'd still hold coins that have some value.
That is just an observation about human nature. I have no idea what will happen with the price of anything.