The maximum number of bitcoins that can be issued is fixed.
Eighty percent of the coins have already been mined.
What do you think will happen to the price after all the bitcoins have been mined?
What do you think will happen to the price once all the bitcoins are mined, and how do you think bitcoin will affect the global economy?
There are many possible scenarios after all Bitcoin are mined. Either Bitcoin's price stabilizes on the market or goes all the way to the moon. By that time, prices will be a lot higher than what they are right now. We may not be able to witness those events, but our descendants will. Miners will live solely on network fees, so one would expect Bitcoin to be extremely valuable by that time.
At least, we won't need to worry what'll happen after the last Bitcoin is mined during our lifetimes. Who knows if something better than Bitcoin comes up in the future, effectively making it obsolete? Just my opinion
