Being a bastard.

So if you reject the idea of fairness, one natural reaction would be to just become a total bastard. If nothing is really fair, why not just get what I want? Some people live that way. They don't look very happy to me.

Then there's another response. Okay, I'll just do unto others what I would want them to do unto me. There are a couple of problems with this. The first is that we don't really have the power to do unto everyone as we would like them to do unto us. The second is that frequently what someone else wants isn't what I want. Why should it be different when reversed? So someone else might think that I would really appreciate it if they'd wash my dishes, for example, because they would appreciate it, but they don't realize what an anal-retentive pain in the neck I am, and that when they wash my dishes, badly, it isn't going to make me happy.

Another response might be to just not care about fairness. Don't go out of your way to be nice, and don't go out of your way to be an asshole either. This is kind of isolating. Again, it doesn't seem like a recipe for happiness.