The sense of "good always wins over evil" is rather... knocked into most people's head with a sledgehammer. It's a pleasant daydream, nothing more, since in reality good and evil are way harder to define. RPGs, novels, and other forms of entertainment are there fundamentally for escapism. Therefore, most people take it for granted that in fiction, good always wins over evil.
At least, that's my theory. <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" />
It's funny how people want more and more realism out of fiction, though. Of course, I'm one of them.
