[whatl3y]

I agree with your points and overall sentiment, I'm simply rebutting the initial statement in your parent comment,

> crypto currencies are a good solution for one thing only: electronic currencies.

You contradict yourself by stating above you believe there's only one valid use case for blockchain, but in your most recent comment you obviously admit there are several valid use cases (though admittedly a limited number). Maybe your initial comment was meant for emphasis and not literally that you believe there is only one use case, but be careful using quantifiable verbiage or hard numbers to portray emphasis without explicitly stating that's what you're doing, your credibility gets called into question when doing so.