I'll admit that I engage in recreation when I could be advancing humanity. Even my job does little to advance humanity compared to other jobs I could take if I was willing to make some personal sacrifices. But I don't, I'm selfish, and the best reason I can give why is that I too have things I desire which others are not willing to sacrifice to provide for me, thus I have to prioritize myself.

I find most people work this way. A few are true saints, a few are pure evil, the rest are selfish with varying degrees of outcome.

One could even say that the resources spent on saving this baby could be better spent on saving far more others, and that prioritizing a single person over a group is a selfish action.

So are you really doing the best you can do?