Here's a curiosity. Suppose there is some scarce resource, which can either be used by us for a temporary boost in welfare, or invested for the greater benefit of all future generations. Further suppose that improvements in technology etc. mean that the standard of living is steadily improving, so that future generations will be better off than we are. Then it seems that egalitarianism recommends we deplete the resource, selfishly expending it on ourselves. Doesn't that seem odd? (Maybe it's just my utilitarian intuitions playing up again.)
P.S. For other curious facts, you should read Will Wilkinson: "while nominal inequality is increasing, material inequality continues to decrease. As market competition pushes prices down, goods at the bottom of the price range more and more closely approximate goods at the top of the price range." I hadn't thought of that before.