If you are writing a persuasive essay in favor of banning vending machines in schools, which is a counterargument you might anticipate?

1. Some things you can buy there are healthy
2. Sometimes it's the only thing people can find to eat when they don't have time
3. People should have the choice to decide if they want to use them or not
4. Maybe it's better to offer some alternative (compromise): buy a soda for twice the price of milk - some people would choose healthy milk

do you need some more? :)