I wouldn't pay a fee. FB already makes millions from advertisers, so believe me when I say thay are making a profit. Don't think we need to worry about them not being able to eat. I would just go back to calling, texting, emailing, etc., if there was a fee. FB has done it all these years and made money, no reason that it should have to change now.
So long as it's a reasonable fee I'd have to say Facebook would be worth a fee similar to that of Flickr. ($25.00 a year) I don't like the idea of paying but businesses have to make a profit, unlike the US government.