Will Cryptocurrency be an alternative for tomorrows' world economy?

The overwhelming Strome of cryptocurrency has shaken the entire globe. Every day hundreds of new ICO are being launched. There are nearly dozens of proven stable cryptocurrencies in the market that has skyrocketed their price. But peoples around the world are running towards the sure shot ones.
Will this dilemma of choosing crypto and then again regretting to continue or this will have some sort of fall down in coming days? This question will be answered in future, no any expert is here with us to end our confusion or to project the future of cryptocurrency.
It is like un predictional mechanism that is going on? Before some day, I got a promotion ad on facebook of one cryptocurrency and they are sure that the price will rise up to 90% within a month. They are offering ICO for $0.85 and they project that the price will increase up to $80 by the end of February.
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