If we are machines then how do you explain our Consciousness? Our Emotions? Our Birth? Machines are built, not born. We are in no way close related to machines, unless you want to add physical outside structure, and that still doesn't include all machines.
Our body runs on energy, not electricity, that we get from nutritious food, not batteries or fossil fuels. We have a brain that can think for itself and make it's own decisions, not a microchip that is programmed, has artificial intelligence, or is controlled. Therefore we are not any type of electronic, but we are in the Kingdom Animalia, our Phylum is Chordata, Class is Mammalia, in the Order of Primates, and the Family of Hominidae, and the Genus Homo, with the Species Sapiens.