In my case, it was simply a mixture of blind ignorance and the desire to fit in. As I grew up in a very conservative area of the U.S. Midwest, my entire adult family and most of my peers held bigoted views, and thus so did I. The environment of my upbringing was one of hate and ignorance, so it's no surprise I would find myself hateful and ignorant as well. Of course, I've since left these views behind and realized I'm actually bisexual, but I could've easily fallen further down the alt-right pipeline.