Personally, I don't give a shit if your family consists of a dad, mom, three kids and a cat. I don't care if you are a single mom of three kids and have a dog. I don't even care if you are two guys with a kid, a cat, a dog and a fucking iguana. But there are people out there who do care; rapists, murderers, and thieves...they all care.
By announcing to the whole what your family makeup is, you are telling the aforementioned evil doers who needs to leave a house before they rob it, who needs to be home to get a decent kill count, what animals they will encounter, and who to look forward to if their dick is itching for a good ol' fashioned rape fest.
Do these stickers still appeal to you? I hope not.