I totally agree, and still don't understand why people would want to give that to any service provider.
For years on Mac I have been using keychain (well more or less the same thing as keepass as I understand its features but provided with Mac OsX). I just keep it safe and synced.
The point is what people ask for : simplicity and security (well even if not asked for, if this one is not there, soon it'll blow in their face), not a single identity.
An amazing thing with passwords is that current OS correctly configured and a password manager are more secure than what a service provider can offer (basically because they concentrate the threat by centralizing, have ops, backup/copy data not always that well...)