they already manage passwords and passkeys. It isn't that complicated.

https://xkcd.com/2501/

how is it any more difficult than taking care of a password?

It is not about the difficulty, it's the potential consequences.

People also take care of their house keys and their wallets, but If I lose the keys to my house, it isn't automatically taken over by squatters and if I lose my ID card I can issue a new one quickly.

What happens if you lose the cryptographic key to your nostr account? Who do you call for help?

Can I click a link to reset my keys?

What happens when the key is lost, and the consequences like "lose all your money" or "lose your account access" are non-starters, as someone who owns a hardware key for my email account

Multi-sig wallets are even more complicated and not for normies

what happens if you lose your password? You click a link to reset it, and it gets sent to your email. What happens if you lose access to your email password?

It is the same problem.

My email has multiple recovery methods

It's not the same problem

Send your key to your email. Then it's less secure but I take it you wouldn't mind.

This attitude (the snark) is why Nostr fails to attract any meaningful number of users outside of the crypto bro cult(ure)