I believe that Bitcoin stands a chance to become the new world currency. The US Dollar continues to depreciate in value and the American economy is in turmoil. Considering that the blockchain was created to help solve this economic crisis, if and when the dollar completely collapses, those who have any of their assets in Bitcoin will be in better financial shape than those who dismissed it as a sham.
not to mention that us dollar cannot be a a true global currency like bitcoin, because it isn't accepted everywhere, and you need t pay a high fee to exchange to the current fiat in those countries that do not accept it
bitcoin on the other hand can be accepted by everyone and it is the only currency that can be used as a global currency, no fiat can compare to this