I am too... I have cut a lot of sugar out of my diet and I have felt SO much better.
I try to eat a high protein and low(er) carb diet, myself... I still eat a decent amount of carbs (as I freaking LOVE pizza haha), but I take in much less carbs than I used to. Sugar and carbs are real killers... Since changing my diet to a higher protein and lower carb/sugar diet, and since adding in plenty of exercise (ie, hiking and biking most days of each week), I have lost around 25 pounds (from 210ish to 185ish, which I don't think 185ish is all that horrible for a 28yr old 6 foot tall male). The most important aspect, I think, is that I can now do a lot of physical activity without getting all that winded (and when I do get winded, I recover quickly). I hated feeling very winded after doing basically nothing.
So, solely by changing my diet and increasing physical activity, I have gone from being a lard ass to being in much better shape. I'd still like to lose another 5-10 pounds, but I'm more concerned with how I feel while doing physical activity (ie, how winded I get and how fast I recover from it) than I am with the number on the scale, and let's just say that I feel great.