> Politically and culturally they are though...

I don't even know where to start in trying to understand this statement. Are you saying that you will only leave a political and cultural legacy in your children and no one else? People not having kids could very well be leaving a _larger_ legacy than those who do. They do have more time after all. That's just a thought experiment, but far from implausible. Frankly I find your point here to be utter nonsense.