I'm thinking that it was due to an interest in mythology. Can remember reading (and recently purchased for my kids),
D'Aulaires Book of Greek Myths, which is an oversized books filled with stories of Zeus, Heracles and other gods, demigods and heroes of old. Of course I branched into the Norse myths with hammered Thor and all, and drank up anything on the subject that was available in our local school library, which was pretty small. Note that the librarian made sure that you were able to read the books that you requested, as we'd hate to have children try and read beyond their expected grade level, now would we?
Can't discount the water that came from motion pictures that featured Harry Harryhausen's work, such as Jason and the Argonauts and the Sinbad flicks.
Once the 1980's hit with D&D, AD&D and the various fantasy movies (The Sword and the Sorcerer, Ladyhawke, Krull and
Hawk the Slayer), if not already, I was then drowned.
Hmm, but for the presence of damsels in distress, would I now be reading the sports pages?