3 out of 4 laptops in the browsing area at Changi Airport

had this logo on their screen –

How has Facebook managed to become a ‘need’?
Is it our need to feel appreciated by our social circle, our need to know what’s going on within our social circle, our need to stay ‘connected’ or our need to look at photos?
I’m not sure myself. Whatever be the case, Facebook’s web browser domination (in terms of time use) is awe-inspiring.