Nah, cats can be just as dedicated to their owners as dogs. I think they just have different body language that most people aren't really as in tune to as with dogs.

For example, when cats glare at you with a kind of disinterested look, blinking slowly etc., that's actually an expression of trust for cats. I know my cat also gets extremely excited to see me every time I come home and hangs out on the porch with me after work each day.