Robert Shiller, professor of economics at Yale University and co-founder of the Case-Shiller Index, expressed his idea about cryptocurrency.
Lol,his name is
Shiller.

Will the bitcoin disappear? What's the true value of bitcoin? What essence in bitcoin are we paying for?

Bitcoin will not disappear.
There is no true value of bitcoin,because of its volatility.
Essence? Just because bitcoin is intangible doesn't mean it has a particular essence. You are paying for something called a cryptocurrency. You can buy and sell it,for anyother cryptocurrency or fiat,