The only problem that I don't want to have cats is that I have to clean their "business". But this product helps me to taking care of that. It's pricey. I love the idea though. Maybe the price will go down in the next couple years?
I have never bought anything weird for my pets, ever. That being said, with apartment life ahead (as opposed to living on a farm) I'm likely to hook this up to a water line and never have to scoop cat litter for the first time.