2010, I went off sodas....going to plain no-sugar ice tea (slice of lemon added).
Yep, for the most part, sodas are just dead calories of high fructose corn syrup.
What you say is true, light exercise isn’t going to burn a lot of calories. However it will make you feel better and does have other benefits. Even walking about 7,000 steps a day will make you feel much better, increase your circulation and it’s correlated with longevity.