I think that it's not about an argument, its a mental simulation and chemical effect. If you hold in your head the feeling of owning your body completely, for a moment, then start to imagine zooming out to a wider perspective, slowly, like a camera you see the whole world then the solar system, etc. As you scale outwards there is usually a noticeable chemical reaction in your brain and body. You literally feel smaller. My guess is you are triggering a predator-is-bigger-than-me reaction in your brain.