You, of all people, are not bad for me. You are the opposite of terrible for me, as a person. You are good for me. You make me stop and realize that it is not all about the big picture. That there is more to the story than the end result, and for that, you are good for me. Happiness wasn't easily found before you. That makes you good for me. You make me laugh and remember that the world isn't all that bad. That makes you good for me.
Fact is, you're not bad for me, you've never been bad for me. I don't think I could love a person like I love you if you were bad for me.