It is a powerful analogy, but even without Singer's reminder, it is one many of us already subconsciously intuit or consciously consider and ignore. Many of us using this site likely have what we call 'disposable' income; that is, we not only have an income which satisfies not only our immediate and future needs (in the form of superannuation perhaps, or retirement savings), but enough cash to buy take-away coffee instead of making our own. Enough cash, perhaps, to buy alcohol and cigarettes, to visit cinemas, go on holiday, consult psychicsimprove our homes. Some of us have a holiday home and/or investment properties. Many of us buy unnecessarily fine/expensive clothes and food, unnecessary quantities of clothing and food. Some of us even gamblegamble money at odds which make us certain,we know ensure we will in the long run, be certain to lose. (I do not diminish addiction to substances/gaming here. I'm referring to those who are not medically compelled to indulge).
Given there are reputable, proven, independently-rated charities via which we can demonstrably provide for the wellbeing of people who are truly destitute,
Given that we have the means to donate to such charities far more than we already do,
We are failing to pursue an ideal of fairness intrinsic to what most of us would consider our morality, and in so doing...
Are contributing - via neglect - to the ongoing, preventable death, disease and sadness of many people we have the capacity to help in transformative ways.
In doing so, we are failing to pursue an ideal of fairness intrinsic to what our own moral code or compass.