rewatchability should indicate a light-weight movie.
If you want that, you look at rewatchability, if you want something more complex, you use quality.
I think this is the underlying assumption.
What if you rely on the service to know all your password and you only know your key to the service .. and then somebody manages to take over your account (getting access to your mail address) and to delete all your data?
That would be not as bad as him knowing your passwords, but still inconvenient.
Just to be clear, the pirate party (with 7.4%) is in the parliament, not in the government.
The government will most likely consist of a coalition of the parties CDU and SPD, so that the Pirates will be in the opposition.
I am sure you meant that, but it wasn't clear to me.