Let's wonder a little. The year is 2057.
(By the way, Chris Pratt is the POTUS, sorry about that)
How do you imagine yourself with your bitcoins? How do you imagine the World you'll live in related to the cryptos?
Blockchain rules the world (from elections to the way your grandchildren interact with friends) and BTC is everywhere? Another crypto that does not even exist yet is now the king and both blockchain and BTC are seen as a museum piece, such as a steam locomotive?
I will be dead so i wouldn`t care that much about bitcoin and how many bitcoins i have.
Bitcoin might be destroyed or there would be a better altcoin.
Perhaps people won`t even use money or cryptocurrencies.