*slightly offended*
I, too, own a cat. And she is extremely playful, happy, and energetic. She makes adorable faces and demands I pay her attention and bring out her favorite mouse toy. She sits on command for her favorite treat and plays with my ferrets - even begging me to let them out when she's bored. She greets me at the door and meows at me pitifully if I've been gone too long. I am number one in her eyes, because I am her guardian, her caretaker, and her friend. She never does a thing half-hearted, and she is certainly not a pain.
I don't mean to upset you, but catlike behavior should not be a weakness. If anything, it should be a strength. Cats are independent, proud, and when treated right, even more loyal than dogs. When a cat is lazy, it is because that is all they know. They do not know how to play because, most of the time, the caretaker does not know how to play with them. Sure, cats can be mellow and carefree, but that is never a downside. If you do not like cats, why have one in your home? Sure, my little Mowkie may not be perfect, but she is the best animal I could ever ask for. Sure, she eats a lot, but that's where good portions come into play. I feed her 1/4 of a cup of dry cat food twice per day, and if she eats all of it in one sitting, then she must wait for the next helping many hours away. This may actually be helping her lack of lethargy, as overly fed cats can grow lazy and only want food. Things like that can lead to heart attack, obesity, and much worse, particularly if the cat is declawed.
I ask that you not assume that all cats are lazy, lethargic, hungry beasts with no minds for orders or commands. Because I can tell you now that you would be wrong. Once more, I mean not to upset you...only to let you know the facts. I do take offense to the assumption that catlike behavior is a weakness.