If BTC goes to zero, I will buy the remaining 14 million floating coins for $0.00000001/BTC.
Of course, there are others like me, and this will bootstrap value >$0
What we need to brace ourselves for is it going to infinity. There are not that many coins left, and when people realize this, they will run for the exchanges.
The exchanges, of course, are all actually insolvent, as over the years fraud, loss, theft and just plain being a dumbass has made their liabilities impossible to satisfy. There is not enough coins.
Not your keys, not your coin. Stash em away asap!