I am not entirely human. All of the parts of a human being are inside me, but I have a few extra bits as well, not so much floating around as firmly secured in place. In some spots, these nonhuman bits hold me together. In other spots... well, that's a different story.
I have a couple gadgets inside of me. One was forced on me; the other I chose. I made the choice in much the same way you'd choose a computer. I tried to future-proof myself. I chose an option that I could upgrade later. In the end, I made a decision that was not entirely rational, but rather based on passion and branding and aesthetics over performance. Like I said, just like a computer.