I’m a moral nihilist. I have no reason to believe that morality is anything other than preferences.
I have those preferences, of course — essentially it’s just intuitional leanings. Any need or desire to follow those leanings is purely for my own enjoyment. I decide what is right and wrong based on what I feel is right and wrong, and I follow them only because of a self-created obligation to myself. I demand that others follow the same “rules” I have for myself, because I want them to. It makes the world the way I want it to be.
The way I see it, every other system of morality is based on unjustifiable claims too, so why follow someone else’s invented ideas of right and wrong? I might as well pick the unsubstantiated claims that I like. I create my own meaning to life, because there isn’t one inherent. I create my own values, because there aren’t any inherent.
Less abstractly? I want good things to happen to good people, in appropriate proportion. I want bad things to happen to bad people, in appropriate proportion. Intentions are more important than consequences. Truth is valuable. Logic is valuable. Dignity is valuable.