Doggie Owner's Egoistic Antics

Why do dogs seem compelled to urinate on other people's property, but never their owner's? Why do some dog owners conveniently become blind to their dogs defecating when they are not directly observed? Why are some dog owners seemingly unconcerned when their dogs urinate on other people's property? Why do some dog owners fail to carry water to dilute their dog's urine, showing consideration for public spaces? Why do some dog owners believe they are exempt from picking up their dog's waste if it's deposited on road verges or around trees on side-walks? Why do some dog owners feel justified in discarding used dog waste bags on the ground if a proper bin isn't immediately nearby? Why do some dog owners assume that their love for their pet is universally shared? Why do some dog owners believe that a casual assurance like "he's friendly" or "she won't bite" is sufficient justification to let their dog roam unleashed in public spaces? W...