Actually, gluten is added to a lot of foods. Deli meats is one the ones I remember that gluten was added to. I think the Cheesecake Factory adds gluten to almost all their food.
My point is this, perhaps not well expressed originally - most people don't NEED gluten free. It's just another in a long line of food fads that Americans have jumped into.
This article just got posted on Drudge today. I apologize for not having the skills or time to put this into a clickable link. http://www.telegraph.co.uk/foodanddrink/healthyeating/10430422/The-great-gluten-free-scam.html