Exactly. Also subscriptions pair nicely with continuous changes to UIs and features, for better and worse. If I'd bought "Facebook home/student 2012 edition"

Exactly. Also subscriptions pair nicely with continuous changes to UIs and features, for better and worse. If I'd bought "Facebook home/student 2012 edition" I'd feel more entitled to it not undergoing dramatic redesigns. If I want that, I'd buy "Facebook home/student 2014 edition" and hope its migration wizard works.