You could also fall in a well and would probably make no difference to the world.

You could drive a 20 year old car, live in a small apartment, wear Walmart clothes, and rely on Social Security for retirement while donating everything else to charity, and the difference on your life would be negligible. You'd likely go from a 99.9th percentile lifestyle (globally) to a 95th percentile lifestyle. Why are you hoarding your wealth when people are hungry and dying of preventable diseases around the world? Of course, you'll insist that "it's different" (you can't possibly be expected to take a 5 percentile hit to your lifestyle!) but that's just an excuse to exempt yourself from your own moral code. Why would anyone take progressives' supposedly "moral" beliefs seriously--or even to view them as being sincerely held--when even affluent progressives consider themselves to be immune from their own moral calculus? Is there a single religion on earth that is so blatantly hypocritical as to make demands of others without requiring them of the faithful?