Clearly, you haven't worked in tech support, or known anyone who has, or read any of the blogs or horror stories, or, really, informed yourself in any way about this. Humans have a bell curve of both "crazy" and "mean", and the tail end of either is not something you'd ever want to come into contact with.
It's the *job* of the people who work in call centers to deal with these people. That's what they are paid for. Do you think that plumbers like dealing with pipes full of human waste? No, but it's their job to do so occasionally.