1. Semi-Unconditional Love: My cats accept me as I am, unlike most family, some ex-friends, and lovers who have come and gone. I'm not sure how accepting they'd be if I didn't open bags of kibble/cans of food or scoop their litter boxes, but unless the recession/depression gets really bad, I won't have to find out.
2. Purring: My favorite sound in the universe. It's helped me fall asleep on many an almost sleepless night, comforted me in times of stress, and made a good day even better. When our cat with the mostly silent purr exhibits a slightly audible purr, it's a special day.
3. Cats Don't Eat Their Own Shit: Need I say more?
More, but I have to go amuse the felines.