I can tell you this: I enjoy reading comic books. And also: this is a very recent development. How did this happen? What started my fascination with American comic heroes?
I remember well how I got into Japanese comics, a.k.a. manga. They were my starting point into fandom.
I was 9 years old and my mother bought me the first volume of Sailor Moon on our way home from school. She never knew what consequences that little act of kindness would have (we had little money, so giving me something without it being my birthday or Christmas was a big deal). In the days and years to come, she would come to regret giving me that little book. She still jokes about it whenever I talk about one of my many fandoms. That one volume started a manga craze, and with it, my addiction to all sorts of media entertainment. Additionally to reading almost every manga that was being published, I watched a lot of anime and some American animation on TV and later online.