Lol as if drinking Soda every now and then is going to matter. Hell even MMA fighters drink Soda when they are not training. Its only bad if you drink it constantly. Someone who stays active and maybe has a soda once or twice a week isnt going to feel any negative side effects from it.
Most things are bad when overdone.
This. If you're waking up and having one for breakfast lunch and dinner that is going to affect you. Having one a week won't do anything.