I also felt this way about religion in high school. When I was born my parents made the decision not to baptize me, as they feel that religion is a personal experience and wanted me to have the option of choosing my own faith. Knowing I had this freedom to explore religion and its meaning, I constantly challenged what my religion teachers had to say about Christianity and Catholicism in high school.
One day, the topic of heathens came up in religion class. I asked my hardcore Catholic (I'm talking genuflecting before entering the classroom, rosaries hanging from the ceiling, 10 kids-having type Catholicism) teacher, Mr. Lee*, what exactly a heathen was.
To which he replied, "Someone with no religion."
The Random House Dictionary defines a heathen as:
1. an unconverted individual of a people that do not acknowledge the god of the Bible; a person who is neither a Jew, Christian, nor Muslim; pagan.My understanding of the word at that time was the second definition, and I took some offense to being considered "uncultured" or "uncivilized" because of my personal beliefs. However, I also felt like a rebel being--as far as I knew anyways--the only student in class with no set religion.
2. an irreligious, uncultured, or uncivilized person.
* Name changed, of course