YouTube says: "Two professional engineers illustrate the proper care and practical benefits of cats." In this case, three cats. The video is narrated by engineer and "guy who has all those cats", who talks about food (especially tuna), cat hobbies (such as lounging, floral arrangement regurgitation, and various forms of low-energy performance art) and potential uses of cats as energy sources (not quite successful).
According to YouTube, "None of the cats, humans, or engineers were mistreated in the making of this film. They were however, slightly annoyed."
This video definitely some sound reasons for cat acquisition and retention.
(thanks to Christine for the link!)