Perhaps we don’t change our minds because we haven’t seen a convincing counter-argument to the thesis that blockchains are fundamentally about getting rich quick through buying in early (or pre-mining) and then finding greater fools.

The most successful actual applications thus far, as far as I can tell, have been silk road and paying ransoms.

I know people that send money home and they don’t use cryptocoins. These remittances communities are savvy and price sensitive, if there was a superior product it would be spreading like wildfire.