Champagne has relatively low calories compared to wine. I think calories consumed is the wrong measure as it's not the right focus. You can count your calories as much as you want but you also need to think about what you are actually eating and the impact on your body. Sugar is a real problem. It has some many serious health risks (diabetes, weight, teeth etc), but is quite normalised. Look at the sugar content in the breakfast cereals you give your kids. And as Spartacus says carbs, fat and salt are also things you should watch.