Actually, I do dog rescue and have used and recommended dog carriages and carriers for certain situations. There are breeds that cannot be walked for very long because of their small size (all of the teacups), have defective thermoregulatory systems (bulldogs) or breathing impairment (all the breeds with short muzzles).
I think you're missing the point of the thread, it's about Paris Hilton wannabes treating thier dog like an accessory or child.
No, I did not miss the point. I was just trying to point out that blanket statements are dangerous because there are, actually, many good reasons why a dog would be in a carrier or a carriage and not only to show-off or emulate Paris Hilton.