Diet pop (or soda, depending where you live) has always been a staple in our diets. And there are more and more studies out there on how bad this drink is for you. We have finally weaned off the stuff and not really missing it any more.
In terms of waste, the aluminum cans were easy to recycle. Lots of receptacles collecting to raise money for charity or clubs. But, it is much better to avoid in the first place.
Not cheap either, so we are saving quite a bit by not buying.