The biggest issue I have is that I expect reciprocal behavior (knowing that it is not going to happen), e.g., if I hold the door open for someone and they don't acknowledge me, or if I stop to let someone pass in front of me in a parking lot and they don't even acknowledge it, etc. etc... It's obvious to me that MOST people are so self-involved that nobody else matters. It's not that "it's all about me", it's just that rudeness and being. a prick in unacceptable.
