All animals are better than people regardless if they can "please" me or not. That doesn't mean "I hate all people." I've only heard your type of argument in people that hate cats (ironically they say the same as you and their dog lovers) so you're generalizing just as much as cat haters.
Also, it's implying that people have kids out of selfless reasons, one can argue many reasons why having kids is a selfish act for some people (not all) but a lot.