I agree with you OP. But then again i also don't have children!
I'm now terrified tho! i'm trying ttc but not so sure after reading this thread, it sounds as if all kids suffer from prada willy syndrome! Surely most people eat when their hungry and if teenagers are eating that much it is because they need the energy - Apples just don't really do it - even if you do have one in each hand!
When i grew up i never had to ask, neither did my DP, however, we're both only children so the locust thing wasn't really an issue.
Also about the eating what's for dinner, i don't really think i would have eaten the raw mince, raw onion and dried spaghetti no matter how ravenous i was!
The fridge had cheese, ham, pate, etc and the cupboard had tinned beans, ravioli, cereal, bread, jam, peanut butter, biscuits etc, freezer had micro meals.
And to the posters who say they wouldn't walk into their parents house now and help themselves to their cupboards - I think that is a weird thing to say as of course you wouldn't; it isn't your home anymore. But it may be your home when you are 12 and then it is normal to eat something when you are hungry. I would hate to have to ask at that age and to feel like a guest in my own home.
Most of my friends also could help themselves and none of us turned into mr creosote. The weirdoes ones who couldn't were exactly the ones who would eat and eat till they were ill when they came over.
I remember one mother telling my mum when she dropped dd at my 9th birthday party (with 40 kids there) that mum had to watch that her dd didn't eat until she threw up! She was so restricted at home that when given a choice she went berserk.
Also to the opinion expressed that this is why young people are the way they are, because no one said no to them and let them have what they want - i think there is a counter argument to that which is; that this is why they are the way they are, because everything is so structured they cant develop personal responsibility and when they have it they don't know how to behave.
I work with young people and they expect to told how and when to do everything.