It always seems odd that bottled water gets trashed a lot more than bottled soda, when soda is both worse for the consumer's health, and probably has a higher environmental footprint (since it's not just the water, but the water plus whatever sweeteners and chemicals get added).
True, soda doesn't taste the same as tap water, but bottled water doesn't taste the same as tap water a lot of the time, either. Some people also prefer the convenience of buying a bottle of water, and it would seem strange to say: "Hey, it's fine to buy something in the bottle if you're doing so for the flavor, but if you're doing so for the sake of convenience, that's terrible."