I think one day these crypto currencies would become major currencies in the world. It's actually an intriguing question as to why people are in investing in Bitcoin so that it's 12000 times of the currency of world's most developed country, US...
There are over 1000 Crypo curriencies being traded currently... you can start your own too
hackernoon.com/how-to-create-your-own-cryptocurrency-tips-to-get-started-947ba92f79f9