From a nutritional point of view there is no point in avoiding glutens unless you are allergic to them. Glutens are simply proteins, which are good for you if you're exercising (unless of course, you're allergic to them).
Now, one could argue that since glutens are typically found in grains and grains are carbs, and carbs make you fat, sure, it's possible that avoiding glutens is healthier... but it's not the avoidance of the glutens that makes it healthy, it's the avoidance of the carbs. Personally I couldn't bear to give up all carbs, life would lose so much meaning doing that
. But I've definitely cut back.
Anyhoo, grats on the weight loss. Very impressive, and yet more motivation that I should never give up.