Facebook have been having a lot of bad publicity lately (and I would personally say it’s long overdue) and a lot of it over privacy. Now, there’s talk about Facebook lifting SMS and phone call information from Android phones with consent. Yes, Facebook asks for it, but you can (and should) refuse it access.
Later versions of Android allow you to revoke and change the permissions given to an app, and also prompt you again if the app asks for it.
My Facebook app has very little permissions on my device because I don’t trust it a single bit.
I also have Privacy Guard enabled and restricted. Whenever it wants to know my location, I can refuse it.