I found a good answer. If you get a dog that had a bad owner beforehand, he's loyal to you for life. Just being an ordinary owner who feeds and takes care of them is beyond their original treatment.

The same can be said about women. Find a woman who had an actual shitty relationship and you have a loyal friend for life. There will still be problems, my wife doesn't know how to set a budget because no one ever taught her, but she will happily be the best wife she could for my average treatment of her.