No one can predict the exact future of bitcoin, i think bitcoin have a nice future, bitcoin right now is almost 7.000$, but the whole crypto market is bad this period, 91.000$ is too much, but lets be positive and hope that bitcoin will reach that price.
yes, no one can really know the price of btc in the future. but many people are prediction that it will be increase in 2020 years.
but increaseto $91.000 it is too hard.