You don't have to be as crazy as the guys who claim they've seen some giant lizard god in the middle of the African or South American jungle to be into dinosaurs. Nor do you need to be as crazy as the people who say dinosaurs first trod the earth millions of years ago. We believe God created the world and that dinosaurs were part of that creation, and that is why we enjoy studying them.
If the evolutionists are to be believed, dinosaurs enjoyed a community structure akin to that of humans. The evolutionists are not to be believed, however, and we understand the great lizards to simply be animals on the level of tigers or egrets or tree frogs. Maybe they were fast and powerful, maybe they were slow and ponderous—we don't really know because it's hard to be certain about animals whose only remains are some old bones.
It's funny that so much "serious science" has been conducted based on no more than those bones. Entire evolutionary epochs have been supposed and described based on fossil evidence that may or may not be evidence, and that could certainly be interpreted differently. Of course, defenders of the biblical Creation story have often made similar blunders, trying to "prove" creation using those same fossils and bones.
The thing about God's creation is that it proves itself. Scripture makes it plain that God has manifested Himself through the earth and everything in it, and no amount of logic or apologetic science will make people believe biblical truth. Evolutionary theory is the result of unbelief and spiritual blindness, not objective or thorough scientific study.
These books are intended both to present a biblical view of fossils and dinosaurs, and to inspire interest in young readers. Secularists often complain that Christians indoctrinate their children from a young age (ignoring the fact that they do exactly the same thing): we call it training them in the fear and admonition of the Lord. We'd rather get it right by Him than by a bunch of self-righteous scientists.