Elegran - to a certain extent, I do agree with you. I read, from a very early age, all the fairy stories I could get my hands on and they generally included the damsel in distress being rescued by the handsome prince and I tended to think that was how life was; life taught me otherwise so my opinions changed and my taste in reading material changed likewise.
Both of my children were introduced to books at a very early age and my son disliked any form of fiction other than the Fighting Fantasy range. To this day, he tends to read factual (widlife, the universe, nature - that kind of thing). I think children eventually settle on what interests them.