Moxie Marlinspike has a great talk on this subject (https://www.youtube.com/watch?v=Aom3JonbcZU). The problem isn't the choice -- but the constantly widening scope of the choice, back when Facebook was a brand-new thing, the choice to not have a Facebook had no impact on my life whatsoever.
Today all of the photos albums my friends have taken are in one place: Facebook. All of activities people plan together are posted in one place: Facebook. When you meet someone new the nearly first thing they do is: check your Facebook. Facebook has broadened to assimilate the scope of activities and actions which were formerly independent aspects of life and to not have Facebook now - one pays a significantly higher social cost.