I'm just playing devil's advocate here, but my view is that I was not asked to be born under these circumstances (over population, unequality of wealth, unfairness, etc). I never was in charge of dictating the type of world I wanted to live in. Therefore, why do I have the burden to do something about unfairness in this world? It's like saying to a developer "Go fix this bug RIGHT NOW!", and then when he/she asks for commit permissions, you reply back "Sorry, you need to sign this form, and give it to HR, then send an email to the DBAs, and wait a couple of days.. but still FIX IT NOW!"