whoever said bitcoin will be worth $100k on one day is nothing more than a dreamer living in a fantasy world. predictions up to $5K are also high, but not that unreasonable. $100k is beyond insane.
Then you believe it is going to zero.. it is really that simple.
Bitcoin becomes a store of wealth or it dies. You think BTC will be able to hold a hash rate in 12 years with the price the same and the miners all mining in the negatives...
It's zero or hero that is it.