Just think about someone living alone in the woods for all his life. What's his motivation to get up each day? Sex? I don't think so. And yet he'll create things, shape the world around him. Calling "leaving a mark" meta-sex is silly. It has nothing to do with sex. 'Sorry, "meta-fuck".
That would be the outlier. The exception to the rule. Most likely you would ask them why they have withdrawn from the world and at some point you will see a total rejection of everything, including the entire culture of sex which I am talking about.
Nothing is 100% around us. What I am talking about is the rule, not the rare exception that might occur every now and then.