:) Um...well, not exactly...

I'm not exactly sure what you mean by "epicenter", here.

Fucking, however, needs no further explanation! Sex is by no means "what it's all about", either, except as an intermediary activity the results in reproduction. The thing that many people don't take into account is that human cognition is not driven by any overarching, mindful goal (even subconsciously mindful, if that has any meaning). So, there's no reason to think that people designed economics thinking to themselves "Hey, if I do it this way, I'll get laid!" No. But they DO use the cognitive mechanisms which were shaped by a history of getting laid or not (again, inasmuch as fucking=reproductive success.)

Let's get off the topic of economics for a sec so I can maybe make the point succinctly. Let's say that eating ripe (as opposed to spoiled or unripe) fruit allows you to be a better nourished individual, which leads you to get laid more often (either by virtue of being alive, or looking better than your undernourished rivals). Now, the cognitive instruction that would come out of this scenario would NOT necessarily be "Eat ripe fruit so that you can get laid!" It would be the much simpler "Eat ripe fruit"...which has its form BECAUSE it has a history of getting you laid. See the difference?

Or, were you perfectly aware of the difference all along and just pokin' fun?