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One additional unit of income can do a hundred times as much to the benefit the extreme poor as it can to benefit you or I [earning the typical US wage of $28, 000 or ‎£18, 000 per year]. [I]t's not often you have two options, one of which is a hundred times better than the other. Imagine a happy hour where you could either buy yourself a beet for $5 or buy someone else a beer for 5¢. If that were the case, we'd probably be pretty generous — next round's on me! But that's effectively the situation we're in all the time. It's like a 99% off sale, or buy one, get ninety-nine free. It might be the most amazing deal you'll see in your life.William MacAskill
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What now matters most is how we respond to various risks to the survival of humanity. We are creating some of these risks, and discovering how we could respond to these and other risks. If we reduce these risks, and humanity survives the next few centuries, our descendants or successors could end these risks by spreading through this galaxy. Life can be wonderful as well as terrible, and we shall increasingly have the power to make life good. Since human history may be only just beginning, we can expect that future humans, or supra-humans, may achieve some great goods that we cannot now even imagine. In Nietzsche’s words, there has never been such a new dawn and clear horizon, and such an open sea. If we are the only rational beings in the Universe, as some recent evidence suggests, it matters even more whether we shall have descendants or successors during the billions of years in which that would be possible. Some of our successors might live lives and create worlds that, though failing to justify past suffering, would give us all, including some of those who have suffered, reasons to be glad that the Universe exists.Derek Parfit