Soda bans are not the way to go. If you're referencing the large soda ban proposed in NYC, I'm glad that atrocity was ultimately rejected. There are better ways to combat health problems than going down the road of telling people what portions of food they are and aren't allowed to buy. That legislation was especially hamfisted in that it attempted to target movie theaters - the law potentially being that if you want soda throughout your movie, either hope you can take up two cupholders, put it on the floor where it could easily get knocked over, or miss part of the movie to go back to the concession stand for a refill.

I don't want to eventually live in a world where I'm only allowed to order 8oz steaks (with the fat helpfully removed by law in case I got funny ideas about eating some of it) and small fries. It's a serious issue that people take that soda initiative as some kind of good thing.