[rsynnott]

Sure, but with most things, there is demand for them either because owning them yields dividends (stocks) or because they are required for doing something else (commodities); the demand is based on utility. Bitcoin obviously doesn't pay dividends, and is increasingly useless due to the ludicrous transaction fees, so it increasingly looks like the value is being driven mostly by speculation/expectation of capital gain. This is, historically, unsafe.

[Eerie]

My impression is that most people buy Bitcoin, expecting to sell them at higher price, while claiming that it won't crash because it has real use.

Well, tulips are also quite useful. You can't decorate your garden with Bitcoins...