I think the frequency of it would be my issue. I give Linds pretty much ev we eat - including desserts and cookies - unless its REALLY not appropriate (too spicy for eg). She gets a very good mix of food at home and at nursery so I wouldn't make a fuss at all unless it was really all the time. I'm a dietitian and I don't believe in 'forbidden foods'; breeds bad habits/attitudes! BUT, any child no matter the age should never be given sweets if they've refused dinner/fruit/healthier option, that's for sure... imo, of course!