We could, in theory, have been born with a consciousness that distances itself from our neurological, biological self. We could have brains and body that react to stimuli, feel emotions and reactions, reason, contemplate (cognitively) yet not also possess the part of consciousness that feels unattached to the body.
But instead we all have a consciousness that believes itself to belong to who we are. The “I” consciousness happens. We could be observers, only, of ourselves, like we are of every other person and thing, but instead we are attached to that remote part of our consciousness. In fact life would be easier much of the time, if we felt separate from our emotions and physical parts of our body, so why then, doesn’t it happen that way?