I don't think I prefer writing for one age group above another. I am just as pleased with a story which I feel works well for very small children as I do with a story for young adults.
In some sense, there is no such thing as writing for children.
If a film is suitable for family viewing, it should remain so, and if a film has some adult content, it should remain so, and these genres should never be mixed and spoil the vision of the story teller.
I always like to say our shows should be something that, you know, before 10 o'clock, if your kid wanders into the room, they should be able to glance at the TV, watch what's happening, but not quite know what's happening. That's always my standard.
There is a very big difference between writing for children and writing for young adults. The first thing I would say is that 'Young Adult' does not mean 'Older Children', it really does mean young but adult, and the category should be seen as a subset of adult literature, not of children's books.
I don't want little kids reading my comics.
My advice is this. For Christ's sake, don't write a book that is suitable for a kid of 12 years old, because the kids who read who are 12 years old are reading books for adults. I read all of the James Bond books when I was about 11, which was approximately the right time to read James Bond books.
People are usually surprised to hear this, but I don't really read children's books.