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I still don't see the fraud? Just because your friends/associates aren't using cryptocurrencies for that purpose right now, doesn't mean that other people aren't, or that they won't be in the future.

This is akin to saying that seat belts are fraudulent because they aren't saving your life every single day. You might not need the properties of censorship resistance, privacy and so on right now, until one day you do.

I would much rather live in a world where such currencies are available in case I need to rely on them.

Yes but do you understand what speculation means? Speculation means betting on future value.

Those things aren't so incompatible. You can hope they'll go up because they have useful properties.