In my opinion it is hard to predict the future of some things, directions sometimes even in 20 years or so. Because our society is developing so rapidly and historical events appear so dinamic even in short periods of time. What will be in 100 years we less likely will see, our children or our grandchildren will. And it may be quite another world comparing with that we used to see nowadays. But I think it will be more digital and computerized world. And there is a chance for Bitcoin to be in it in 100 years.