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Interestingly, we have the same responsibility with many other important pieces of info (i.e. passwords for bank accounts, e-mails, social security #, etc.). It's not farfetched to extend it to cryptocurrency.

That's true, but in the event that you forget your online banking password, you can prove your identity and re-gain access to your account.

In the case of crypto, if you lose your passphrase, there's no way to recover your funds...

That's actually a very good point. Cloud storage systems are going to take advantage of this in the future... the horror.