Dogs - I know they are good for humanity with getting their owners for walks, loyalty, etc. But have no idea how people get hooked on them with the picking up hot feces and 25% chance of getting a barking/jumping lunatic that you have to rearrange your life every 6 hours around their bathroom habits...
The same reason people generally don't regret having kids even though the commitment and overall change of your life are much greater than what you described for dogs.
You need to have one to understand the unconditional loyalty, love, and the bond. You come to appreciate it even more once you lose them. Having a dog is the best and worst thing in the world. Just lost our fur baby a week ago...
From your description, I will assume you never had a dog as none of what you said happens like that
Yeah, a few friends of mine have dogs, and they fall very much into the "nice to visit, wouldn't want to live there" category for me.