Do you think that this is rational thing for my parents to do?

There is no parental philosophy in their actions, but people can't really judge the actions of other parents. I think that if you choose not to eat lunch you don't have to, and that is all your choice. I believe that while parents are a very important part of your life they don't have the right to make all of your choices. I never eat lunch in school because I don't like lunch and I have been doing it for 5 years and my parents have never punished me for not eating.