No, not by those people without kids (although they are bad enough), but by people who use them when they have no kids with them but a car seat in the back of the car. Hello? The whole point of the spaces if for people who have their kids WITH them, not who just happen to have kids, somewhere. I saw two people do this on Saturday (while shopping with DD aged 2) and it really riled me - they should know better than anyone what a struggle it can be taking kids shopping.