"What I liked about my childhood"-database
If you have sisters and brothers, you will, as you get older, sometimes discuss the old times. Pretty often, you'll come across things your parents did that were just awesome (e.g. when you had to go for a vaccination and were brave instead of wailing around and terrorizing everybody else, you would get a matchbox car - what a great idea!) On the other hand, you'll come across a lot of stuff you virtually hated (e.g. you were forced to play a violin - and yuck, you still can't listen to classical music without getting the creeps).
Wouldn't it make sense to collect these - good and bad - ideas in a database? I mean, it's true that nobody can practise to be parents until it happens, and you can't learn it either. But it's not entirely necessary that the same mistakes are made from generation to generation, while all the good ideas get lost. And it's not exactly the educators who can tell you how to do it right - listening to those who can still remember the ups and downs of their own childhood is definitely the better choice.
Reward: Seeing less poorly-mannered children and traumatized grown-ups