Same
One thing to keep in mind that I have not seen mentioned on here is that the DIS is moderated and has an 'acceptable code of conduct' is is fairly well enforced and provides a safe haven to share views and opinions, and even to disagree at times.
Facebook does not offer that protection and sometimes, with a large number of folk who are effectively complete strangers, a common love of all things Disney is not enough to keep things civil and pleasant.