It is difficult to look so far into the future, and in the near future bitcoin is unlikely to replace the usual money, but it is quite capable of functioning on a par with them. The replacement of ordinary money by bitcoin is a matter of the level of public awareness. Now a huge part of people in the world do not know about the existence of bitcoin, as this is a very young phenomenon. But in the future everything will change exactly, we are already seeing a trend of spreading bitcoin as a virus. Every day more and more people learn about him, more and more of my friends and acquaintances want to keep money in bitcoins. The future is already here.
but we can predict about the future of bitcoin from the present. To me as the number of bitcoin users are now increasing from time to time therefore we can expect that bitcoin will survive for a long long time. In fact people are more interested in online shopping and business and that is a reason that they are now taking good interest in bitcoin, and hope that their interest will continue increasing.