Asking what I would do and what is ethical will give you different answers in many cases. I'm not saying you should be selfish, simply that it is not immoral. If the only choice you are allowed to make to be a moral person is to take the most altruistic path then nearly every person on earth is immoral since they aren't using everything spare at hand to save people who are starving or dying of cold, etc.
Moral questions go beyond selfish or not, to the point that I'm not sure it's even a useful categorization.
Killing anyone who slightly inconveniences me is selfish, and so is keeping my last dollar instead of giving it to the poor, but those two have vastly different moral implications under and system of morality that's any good.
