You might, but we are talking about broad circle of ordinary people here, most of whom spend considerable time on Facebook and will not leave it unless you give

You might, but we are talking about broad circle of ordinary people here, most of whom spend considerable time on Facebook and will not leave it unless you give them a very good reason (privacy concerns, ethical reasons won't fly here, trust me) to do that or offer an attractive alternative. Good luck trying to convince some teenage girl to live at least a day without social media.