WHAT SHOULD I DO my little brother likes mcdonalds?

No food is bad. It's how much and how often that's the killer. Once a week or once a month at McD's for a treat is OK. Homecooking is always best. Will kids whine and cry about not getting as much McDonald's as they want? Of course. Kids whine and cry about everything they can't have that's why they have parents and older sisters to teach them what's good for them to know. If you give in just to shut them up, you're being lazy and they're not learning anything.