You will not get any responses from people that do this because they do not see themselves as doing it. Thats the big mystery here, why people do what they do. Standing in any line someone will always crowd up as close as possible to you, like someone is going to cut in front of them. I like my personal space so stay out of it. I find its usually the men who are the worst violators. You can't control others behavior, as stupid as it might be so just be ready to do what you have to do, even if you were there first. We have moved once before because the neighbors moved in and there went the neighborhood. good bye. You can't fix stupid so remove yourself from it.