> I personally haven't seen any problem solved by the blockchain thus far.

Solved problem: Hyperinflation caused by excessive governmental money printing.

Yes, I know you may not consider this as a "problem", but tell that to the millions of people who have had to watch their life savings being erased to zero value.

Yes, the Bitcoin price may be jumpy, but we aren't yet seeing kids playing with bricks of trillions of Bitcoins because they'd be so worthless that you can give them to your kids as toys.

That DID happen with fiat currency:

Enter "hyperinflation" into your favorite picture search engine.

I personally own a 1 billion bill of a previous currency of my country which I bought for the equivalent of $5 on eBay.