To help people understand why children don't owe anything to their parents, I have drafted this scenario/example.


A - is the parents
You - are the child
book - is the 'gift of life'


A, because he wanted to, put a book in your house, unbeknownst to you. When you finally discover the book, you start to read it. The book is, in general, uneventful (kind of monotonous), though some parts in it made you laugh, other parts make you cry out of sadness, and some parts, yet, fill you with rage or disappointment. Person A, then, demands, not only that you keep the book which he wanted to give to you, but also that you pay him back for having given you the book in the first place. Though you enjoyed a few passages from it, or even if you enjoyed all of it, why should you have to pay him for slipping a book, that you didn't ask for, into your house?