I think bitcoin in the near future will so expensive and it will become more popular as what bitcoin gave in many people who invest and earn profit from it, we can say that it will be the most popular even in the future because no other crypto currency that can equally on it.
They are not only popular but BTC can be the common currency of the European economy. can be spread around the world for the convenience of btc brought to many people, especially engaged in the BTC we have a very high income.