Most of your post is completely irrelevant to the matter at hand.
I think we'd all agree that if beneficial mutations exist, they are so rare that they'd be virtually non-existent.
you assume to much.
Now, how would this occur in your Vitamin C argument? We know that most mammals synthesize their own Vit-C, but humans have to seek it in order to ward off scurvy. For people who scoff at arguments of incredulity, I can't help but notice the glaring contradiction. So, because the claim is that remnants of once functional genes have been abandoned in a non-coding sequence, the fact that humans and chimps share it means nothing
In order for you to acuse me of incredulity, you have to first give me some sort of explanation.(Then if I say "I don't believe it" you could say I'm being incredulous). In your post you gave me nothing , just handwaving. That's not surprising since the standard ID argument that A common creator explains common genetic material is completely inadecuate (Almost crazy really) when you are dealing with broken genetic materia. Just to make it clear:
the fact that humans and chimps share it means nothing
You got to be kidding!!! When I'm grading my students homework and there is a shared piece of information between two papers, If the Info is correct, I usually assume they both hapened to know it and give them credit for it. But if the information is incorrect, I take it as safe to assume that they have been copying from each other. Should I stop doing that now that you straightened me towards the truth that common broken information means nothing? I don't think so. You will have to do way much better than that if you expect anybody to even consider your point of view as vaguely viable. Connecting now with the point of the thread: The real punchline here is the fact that the animals that share this broken gene are exactly the ones that belong to one of the hierarchical groups previously stablished by other means. That way it not only confirms that group, but also is confirmed by it. The conclusion is: Unless ID proponents can come up with somethig much better then the handwaving non-argument that you atempted, ID is prety much a dead in the water still born theory.