I believe that beer snobism is a product of the last fifty years, brought on by the advertising industry. Please prove me wrong.
Why do I think that? Well, I have so many friends that will only drink one kind of beer. "Oh, sorry, I only like Miller Lite." And I kind of relate to that in a sense that you might have a particular beer you're comfortable with. But when I was a smoker, I realized that in a pinch, you would smoke someone elses' cigarettes, unless of course, you were a menthol smoker, but that's another essay altogether.
I have always just liked beer. My grandparents started letting me drink Jax or Falstaff by the time I was six years old. I have pretty much drank Miller High Life since I was in high school. But I like a lot of different brands and styles of beers. I don't consider myself a snob.
But like I said, so many friends will only drink one brand. I just don't think that would have come to pass if the ad industry hadn't told them that it was important to do so...