Speculation is value and a utility in itself. There is nothing inherently wrong with speculating on an asset. In fact, if we're truly honest here, most holders/traders of crypto are mostly there to grow their wealth. This is currently the real killer app of crypto: spectacularly growing your wealth in record time, or the opposite: losing it all.

I would generally agree that most things built on top of Ether are useless, hype-driven or simply scams. But details matters. When the dust clears, I believe there to be a future for some current experiments in a more mature form, but I won't digress too much.

For sure I believe you can still go underground in crypto and dodge everything, but I don't believe it to be the killer app or highly common.