why dont you just leave?

Sometimes I wonder why your still here, Why dont you walk out on us, like you did on everything else. Maybe you can still hear that little girl begging you not to go. Things are different now. We don't need you anymore. Dont need you yelling, saying how much you hate him. Why dont you just leave? You'd think it would make you happier, the way you go on about things. Maybe you still have hope, that this family can pull its self together. Well, it cant. we'll never be like everyone else. It's to late now. No matter how hard you try, not a single one of us is ever going to be perfect.