they need constatnt attention, you have to buy lots of food, you have to walk them, they smell like shit, they are always all over you and annoy you especially when eating or trying to watch a movie, they shit everywhere and piss on the floors, they chew up or rip apart furniture, cables, most anything left in their reach, many of them bite or maul people, and worst of all, THEY MAKE A SHITLOAD OF NOISE AT ALL HOURS.
you may love dogs (for some reason), but chances are you neighbors dont want to hear your animal howling all fucking night or early in the morning, or barking nonstop for hours on end while facing the fence at anything that moves, or nothing at all.
i will never understand why so many people have them.