humans sure are machines

Yes, everyone already knows what I think about the topic. How could humans not be machines? What more are we than a series of increasingly complex machines, moving up from molecular machines such as kinesins, to organelles, to cells, to tissues, to organs, to systems, to organisms? As far as I can tell, every contribution of every system can be traced directly to a drive to maintain the species. Some seem more clouded than others, such as the deeper emotion of love, but I maintain that love is a further mechanism for survival. This is not to say that I do not recognize the inhherent beauty and sacredness to such emotions, but I believe they can all be traced to a deeper need for survival and proliferation of the species. Apparently, love works, and contributes to the extreme dominance of our species.