This sounds like more of a marital issue than one of trying to decide if an IUD is right for you. From your posts, it seems that you've already become comfortable with the idea of a copper IUD, but because you lack support from your husband, you are questioning your decision.
I know this isn't a popular standpoint in our culture, but it is your body. It sounds like you and your husband both are in agreement to avoid another pregnancy. Since that decision is made, the way that you go about avoiding the pregnancy should be your choice, as it is your body that is in question.
If you are not in agreement that you are done having children, the issue is goes much deeper than what kind of birth control you will use.
