Great point, luckily unlike fiat currency, developers can fork the code and create a new currency if they don’t agree with the way things are being run. This happened when Bitcoin forked into Bitcoin Cash (which has a blocksize that’s roughly 8x larger than Bitcoin, and has very very low transaction fees) and its likely going to happen again around mid-November when Bitcoin forks again. Unlikely that all these forks will survive, only time will tell what the market actually values!

Yep, it's also terribly unforgiving to use.

Lose your wallet password and your money is gone.

Fat finger an address sending it to the wrong account and its gone.

Bug in someone's code and the coins get stolen in a hack: gone.

Addresses have a checksum so unless the wallet ignores that, a fat finger causing funds loss in that scenario is unlikely. [0] With the newly designed address format there is also error detection. [1]

[0] https://bitcoin.stackexchange.com/questions/32353/how-do-i-c...

[1] https://github.com/bitcoin/bips/blob/master/bip-0173.mediawi...

Definitely, the user experience is going to have to improve A LOT. It took a solid 20 years before email was used by grandmothers though, in another 11 years it’s likely to see grandmothers using cryptocurrencies!