As you may or may not have heard. Cookie Monster from Sesame Street no longer gorges on cookies and instead eats healthier foods. Parents are also encouraged to leave vegetables and juice out for Santa Claus on Christmas Eve. This is supposed to encourage children to eat healthier foods.
Oh please................
I have know parents of kids that fed them only healthy food. One mom in particular was fanatical about only healthy foods and the cookies she bought might as well have been pieces of a cardboard box.
When this little girl went to other kids houses that weren't so restricted ,she went crazy eating chips, cookies, candies anything she could get her hands on twice as much as the other kids. I have found that with kids who are restricted from certain things. For kids that eat everything in moderation they aren't as likely to go ape shit when they see treats out.
Everything in moderation, and as long as your kids are active there shouldn't be a problem.