There is another way to look at this: ID may be true, but, even if it is, it's not science.
The word "science," as generally used today, usually means specifically natural science. How the universe works free from outside interference.
ID, for the most part, assumes a supernatural hand in the matter. Therefore, it is not science. This doesn't mean it's not true. Indeed, I have a strong suspicion that ID is true, to the extent that God has fiddled with things now and again, to get them on a track that He finds more interesting. However, because ID implies a supernatural agent, it is by definition not science.
Science is the study of the universe at default -- how it acts without a supernatural agency acting on it. Bring a supernatural agent into the discussion, and the subject is no longer science, regardless of the truth of the matter.
ping for acknowledgement, and reply later.