You guys haven't seen any truly fucked up children's books yet...
To give just one examples (from back when I was in kindergarten, about 20 years ago in germany):
A girl living near the sea is told stories about atlantis by her parents, then has dreams of a princess claiming to be her twin and inviting her to atlantis. In the end, she walks along the beach in the evening, conversing with her twin (who is walking in the shallows, refusing to step on dry sand). Finally, she agrees to visit atlantis, but says she doesn't want to get her clothes dirty as that'd upset her mother. Last picture is her clothes folded up neatly on the beach, and footprints leading to the waterline.
There are more stories like that that I had to listen to in kindergarten and primary school. Three I can remember completely, and a few more I remember fragments of. All describing pre-teens killing themselves (though from what I remember, dying is never explicitly mentioned) and having a better "life" afterwards.
And then they wonder why so many in my generation are suicidal...