You give them a smack every once in a while. It releases your endorphins and makes you feel better. Also if you smackem up one good one they can release some cool hormones followed by a hit of adreniline. Kinda like a free high. Really they should thank you for the occasional clip around the ears. I dont bash my missus but, she cooks kick ass food and makes my clothes look and smell better. She would likely spit i my dinner and put my clothes in the blender and throwem in the garden or somat.