I was surprised at the number of houses in my neighborhood with un-shoveled sidewalks. I guess if they don't walk on their sidewalk they don't notice. Some people may be unable to shovel their own walkways, some people may be out of town, some people don't have the idea occur to them, some just wait for it to melt, and some are just lazy. I went to a friend's house last Friday for a Girl Scout meeting and their driveway, walkway, and porch had not been shoveled. The mom knew people were coming over but it still wasn't done. She blamed her husband for not doing it and said it was his job. Because she's my friend and I can get away with it, I gave her a hard time. But I'm sure many people are the same way. PS: if you have a dog and walk it outside you should totally shovel your sidewalk, duh.