@UberActivist
* The computations being performed have little-to-no intrinsic value (at MOST, the value of computing/validating a transaction of the respective currency)

* The currency doesn't inflate to meet demand like a successful currency has to. In fact, it contracts as the block difficulty goes up.

* Cryptos are terrible for the environment, so even if they were worth something, there should be sanctions

The best analogy I've seen to an already-existing fiscal device is penny stocks. You're not trading on value, you're banking on selling it before the next guy realizes it's worthless.