For every gain, somebody literally has to lose. All crypto money is just other people's money.
The people who win are vocal. The people who lose, stay silent, often in shame
And even if you disagree, those gains are not worth the destruction of our planet.
A better degenerate gambler ?
This isn't about companies being made obsolete, this is about regular people losing a lot of money because they didn't understand the risks. They trusted some acquaintance or some family member and now they are ffed.
It's still a net gain for society though - introducing good hard money is extremely positive-sum.
You'd have more serious problems than cash liquidity.
> USD (at least in physical form) is more useful
Which is what, like a low single digit percent of USD? Most people I know don't even have a couple days' worth of paper USD.
> fragile infrastructure
Internet isn't fragile at all. It's extremely robust, especially for relatively low-bandwidth applications like bitcoin. It's certainly more robust than the card payment networks most people rely on.
> bitcoin being superior to traditional currencies depends on the idea that nothing really bad will ever happen again
Anything "really bad" enough to nuke bitcoin will probably also kill you and almost certainly tank the value of USD paper.