Glad I didn't invest into any hardware, just used what I had. I'm close to being able to withdraw my earnings. Will withdraw half to cover the electricity costs and let the other half ride. No loss if it crashes. But even after a similar situation with Bitcoin, it came back much stronger.
I believe it's the natural progression built into the algorithm, as it gets more popular, it becomes harder to mine but also designed to become more valuable. Ethereum is more or less Bitcoin 2.0 since it is designed to learn from a lot of its mistakes.
Don't know the new stuff. But if it's like Bitcoins:
There are a set number of coins available, and the first coin i really easy. And it then gets harder and harder over time. And the more people mining, the faster it gets hard.
So the more hype, the more people gets burned, as if 1 person stats, it does not make a hole lot of difference. But when 100.000 starts, based on current expectations, and it suddenly gets a lot harder, people is going to have a hard time getting their return on investment.