Kids meals vs. parents meals

I know a lot of parents that make separate "kid" food for their kids everyday, then go and make a meal for them and their spouse. I have a friend that used to separate dinner time meals, into kid food and parent food. It prompted me to ask her, what exactly the difference was in the two meals she prepared. The kid food in her house was hot dogs with macaroni and cheese or tuna casserole. The adult food were things like; chicken breasts, brown rice and salad or turkey burgers on a whole wheat bun with baked homemade sweet potato fries and a salad.
This confused me... why would you make a separate meal? Why can't kids eat the healthy and wonderful foods that you cook for yourself?
There should be no reason that a parent makes a separate meal, especially one filled with processed junk food, for their children. Yes, kids are picky but the more we cater to their pickiness, the more likely it is that they will not only have a weight issues at some point in their lives but it is also more likely that they will grow up to be picky adults too.

Happy Monday!