Contrary to humans, pets are so much more rewarding investments (time & love). How many times have you helped and carried someone and when they find new fame, friends, success, they start giving you the cold shoulder, or attitude? I have met so many, one just yesterday.
Having Ah Boy, from the rescue to now our weekly visits has been one of the most rewarding experience. I can't wait til the day when I have him as our full-time pet.