You can't let people like that bother you, they all know absolutely nothing about history and have no interest in learning, so you'll never get through to them. History was my favorite subject in high school too, but once I got to college I had to UN-learn all the simplified, biased nonsense that they taught us in high school, haha. Just remember that you are already probably better educated than 90% of the adults walking around today. Just don't become a German major in college like me or you'll never hear the end of it! What other people think about you is none of your business anyways, and if you try and conform to what they want you'll be miserable.