BNC:BLX   BraveNewCoin Liquid Index for Bitcoin
Using logarithmic curves by @quantdelic and my awful drawing skills, I'd like to believe that BTC could be valued at more than 30 mil by 2035.
Ofcourse, this could be due to inflation (mass dollar printing, infinite QE , etc) or BTC taproot or more bitcoins being lost (currently standing at 33% of total supply lost)
It doesn't have to be one or the other, actually.