Again who we are and how we act we know to be because of our physical brains because when they get damaged who we are and how we act changes. People who were deeply in love beforehand can suffer brain trauma and then feel nothing for the other person after. Where is our spirit then? People turn to spirit for many reasons, not understanding how the world really works, wanting to believe they will live on after death, wanting to believe loved ones are still with them, simply liking the mysticism of it all. None of these reasons actually suggests spirit exists, we see absolutely no real world effect caused by it. As for feeling it their people feel their God with them all over the world despite those gods being mutually exclusive, feelings are very unreliable data.