How could not all Bitcoin end up "lost" (keys lost) or stolen (by hackers)?
Crypto/BitCoin currently delivers mostly on the last one "store of value". So the hackers keep them. Indefinitely.
You could argue that paper money lacks the features of bitcoins so it's easier to lose your funds inadvertently with bitcoin.
Dogecoin for example has some config changes to block size that make transactions cheaper.
It's factually "better" as far as code goes.