In case you're still on the fence about deleting your Facebook account, I highly recommend Jaron Lanier's book "Ten Arguments for Deleting Your Social Media Accounts Right Now" http://www.jaronlanier.com/tenarguments.html …
All I can say is I'd read the book if you're interested for counterarguments. I personally walked away thinking "yeah...this shit is fucking up our minds". On the whole, all things considered, I don't think that's worth it.