Stay away from sweet drinks!

When I came to America, I was amazed by the size of soda in MacDonald. They are like Japanese L size for S size in the U.S.
Of course, I was amazed by people size in here too. How can they fit into economy seat on the airplane? Can they travel? What if I sit right next to them?
I think soda is a medicine to make people sick and large. I agree with taxing them.
I've seen on TV, a lady complaining about her economy situation and how prices of food went up, and on the kitchen counter behind her, there were some soda cans. How can you buy soda when you struggle to feed your family?
I don't agree with diet soda either, I've seen somebody drinking diet soda, but never lost a pound.