I hate the noise of crisps being eaten slowly!

I'm sitting in the university Library trying to work on my dissertation and I just don't understand what goes through most peoples head. Help me understand.

Why do the majority of people totally disregard regulations forbidding conversations and eating in the study section of the library? I am surrounded by talking and crisps (i.e.. chips) eating fellow students.

The reason I don't engage in this type of behaviour is not just because its disturbing to others, but (mainly) because its not allowed. I feel like a complete deviant! Something is clearly wrong with me...