[ahelwer]

Well, one of the few plausibly-valuable additions to the world offered by blockchains are globally-distributed databases not owned/controlled/bound to any single organization. Why not make use of them for something other than scams, pump & dumps, etc.?

[jeroenhd]

Blockchains are expensive in terms of money and energy consumption.

I'm not paying $10-$30 to store data on the ethereum blockchain every time I need to add some kind of datum (assuming the ethereum blockchain). That price will only go up once such a system actually becomes used by many parties, making the system even more expensive.

I'm already overpaying for getting the government to do stuff for me. I don't want to overpay some random servers all over the world instead of my government, that's just moving (and duplicating) the problem.

[bawolff]

Because the times where a globally distributed non-controllable database is actually useful to solve problems is fairly limited.

Blockchain people are the epitome of the "when all you have is a hammer everything looks like a nail" proverb.