I did it on purpose because I didn't want to be forever locked out of accounts that required a FB signin. Case in point, just hours after deactivating (the firs

I did it on purpose because I didn't want to be forever locked out of accounts that required a FB signin. Case in point, just hours after deactivating (the first time), I realized I couldn't log into Airbnb without Facebook. So I had to reactivate, change Airbnb settings, then deactivate again.