Pros of a vending machine in schools?

I don't like vending machines in schools if they have sodas and candy. My students want to eat ALL day and they want to eat junk. If a machine had things like cheese and fruit and juices I think it would be fine, but kids are eating too much sugar, salt and junk. They are too fat, have health problems and without the proper diet can't learn. Some children today are showing up with health problems that didn't show in people until they were 40. Add not going outside and playing ( many don't know how to play games) and they are in need of some direction.