cryptocurrency has a potential role in our monetary system! This is just my opinion, i am either wrong or correct!
You only said potential, of course there is.
People call it the new form of money in the future as we are heading to a digital age or if we are not already at that stage now.
Bitcoin is decentralized, people can transact without the need of 3rd party and this is more transparent than the current system, so the potential is high.