Cats have it all figured out, that's why. "Oh ummm...you there, human person, scoop my poop and then run and fetch me my squeaky mouse. Good owner! Now pet me while I discreetly sink my claws into your expensive leather sofa and distract you with my oh-so-innocent purring. Ahhh...You human people are so easy. I will expect my kitty kibble promptly at 5:30 sharp or make no mistake, there will be more couch clawing."