As a recovering alcoholic (I'm not drinking today and have manged to do so for one day at a time for 30+ years), I must admit I can understand why people find it so hard to leave the BS and FB.
Rather than just face that their life is WORSE because of BS and FB, they want to focus on all the reasons they tell themselves "I can't quit".
It actually distresses me that I can't help them, just like I can't help the drunk who won't admit there is a problem and stop.