[impendia]

I don't describe cryptocurrency as a "scam" or "greed". Indeed, I find the whole subject fascinating.

But, as to where skepticism comes from -- these so-called "coins" have been conjured out of thin air, are not backed up by anything or anyone, and have no intrinsic value. And yet somehow they have become worth over $100 billion.

Perhaps one or more cryptocurrencies will indeed emerge as a long-term store of value. But I think that skepticism is a quite natural reaction.