I know that's how PGP usually works, unless you have a backup somewhere. It's the #1 reason I don't promote using it very much. I was hoping this team had thought about improving that part of the user experience.
I'm not saying you have to give the key to anyone you don't trust. Just set up a system where it's easy to recover the key with the help of someone you do trust.
Also, I might have the wrong term. I was thinking of dividing the key into multiple messages, say in a 2-of-3 system or something. Not just handing control of your account to a 3rd party.