Many people are ignorant about the reasons to avoid gluten. Most who don't eat gluten are allergic to it.
"Nirvana" is baking one's own bread instead of gagging down the garbage sold by such places as WalMart.
BTW, the lovely brown color of factory-produced baked goods is the result of a substance made from the urine of dead animals. If bread says it has 'added fiber', it used be that sawdust was added. I believe that may be against "regulations" now but maybe not. I don't eat that crap so I haven't kept up with the regulations.
Good for you! Just don't want to pass laws regulating what other people can eat. After all, if women can take injections to lose weight made from the urine of pregnant women, people can certainly eat something made from animal urine if they so choose.
The liberal problem comes down to what is always the liberal problem. Equality. It's the idea that if they like it, everyone should like it, we're all equal and the force of law is necessary to achieve such equality. Equality and freedom are mutually exclusive terms.