I'm a grandfather. These little boy arguments you bring to me I swipe away like you were just that, a child.
Not even all heterosexuals are driven by the desire to procreate. My wife and I are in our 40s and have no desire for any more kids but we still desire each other sexually. I also know a number of young couples who have no interest in having kids. Just because some people have a desire to procreate doesn't mean everyone does. In fact we witness desire for procreation ebbing and flowing in society itself. These days, wealthy first world countries are finding their citizens are lacking the desire to procreate to extent that some are worried about being able to maintain their populations.