How do you take apart an iPad? I think that is the point.
That said, humans have always have had "odd" priorities that might not make sense from the lens of rational cost-benefit analysis. Venkat Rao wrote quite an interesting piece about this- about how some people genuinely prefer the occasional escapism of movies to, say, proper sanitation.
We don't sit down and rationally work on our worst problems, we're aspirational, we're idealistic. People working on humanitarian projects have found that the threat of death and the promise of salvation from death DON'T actually stop people from defecating in the streets, etc.
It may be that people want Facebook more than they want protection from violence. That might seem utterly crazy, but it might also be true. That said, Facebook is free to do as it pleases. C'est la vie.
But, we are not all rational all the time. And, studying emotions & psychology are indeed full of answers & puzzles as well.
It's good to see the discussions on HN diverge to an even more interesting point than the OP.
If we are scrupulous and careful never to advocate for rights that don't protect people from violence, we will never ensure any other rights, no matter how deserved they are, unless we cast everything in those terms.
Like, for instance, the right to not get blown up by a terrorist. That's how the slippery slope starts.
But I am helping derail the conversation.