My iPhone died, and all my passwords went with it. They supposedly have a method on their website to verify yourself and turn off 2FA so you can get into your account, but it never, EVER, works. So I lost every single piece of data I trusted to this system. I will never again trust critical data to (a) a cloud-based system protected by (b) two-factor authentication. And of course, I stopped recommending LastPass, which I was installing on all of my friends' and family computers. It's been removed and replaced with a nice local Password Safe that's open source and sits on a USB drive. Everyone feels safer.