I have two main thoughts. First, I do not want to talk to them because I don't want to have to listen to what they have to say but, at the same time, I don't want to be mean to them. This connects to my second thought. These are young men barely out of high school. I've taught many young men who, within a year or so of graduation, are off being missionaries. Whenever I see a Mormon missionary, I picture those guys that I taught, off somewhere strange, doing their best to live up to the demands of their faith. Therefore, I'm always sympathetic and always polite because I think I understand how hard it must be for them to do what they're doing.