Sometimes life just isn't fair, but that shouldn't stop you from trying to see justice done today. It's not silly to believe in fairness, it's admirable. Hang on to your idealism with all your might: it will help you adjust to any unexpected situation, be more self-sufficient, and keep you safe from people who don't like to play by the rules. Everything cannot be completely equitable in every situation, but you can work to make it as close as possible.