is skewed by an unfortunate personal experience. What you call typical is neither statistically typical (in terms of where BYU fans live), nor is it typical as measured against my experience.
In general, I try not to assume everybody in a large group is as bad as the individual bad apples I've come across in my time. When I succeed at that, I find I'm generally happier and less bitter and more grateful. I can honestly recommend that course of action to you!