It's not the frequency of the chalked messages; if a group wants to leave messages so often that they saturate the target audience and lose impact, that's their choice.
Maybe it's the series of cultural briefings that I heard before making port around the world that make me feel that way. Maybe I trotted happily across sidewalk messages the first time I went to college, before I ever knew how disrespectful and insulting that can be in some cultures, but I don't think so. I just have trouble seeing something that so many people consider sacred scrawled there on the ground for people to trample. I guess Jesus wouldn't mind, but I do.
And when I really started to think about it, it's not just this particular set of messages that I try to avoid. I walk around fraternity and sorority names, too. So how do I reconcile one of the best means of campus communication with my aversion to walking on names? I suppose I shall just have to pay attention and watch out for Jesus.