Everyone gets sidetracked by all these religious leaders or wannabe Christ figures, scriptures and the like.
If you don't know about your spirit, you just don't know about it. there's no science to prove it, and not everything in the universe can be logically explained or defined.
Just because something can't be measured doesn't mean it doesn't exist, and the fact that you haven't perceived it doesn't make it nonexistent either.
The spirit is felt, not thought up.
Things that exist need to have physical properties. What role does the spirit play?
Perhaps a better question is; what does the spirit 'do' that we haven't already attributed to something else physical?
When do we get our spirits?
Do they magically appear into the fetus at conception?
Maybe the fetus gets a spirit after the first trimester?
At which exact point does the spirit manifest?
Do animals have spirits?
If not, at what point during evolution did we develop a spirit?
Some more questions;
Humans are wrong about so many feelings we have; someone is behind us, someone is watching us, gut feelings, etc., but we can prove that these feelings are just that; feelings. They do not have a direct correlation with reality (anymore than a statistical anomaly).
How do you know that when you're 'feeling' your soul, you're not actually incorrectly attributing the stimulation to what you
want to believe?
You are correct, just because we can't see something doesn't mean it doesn't exist, BUT if the soul is a tangible thing, and manifests itself in reality, it is measurable to some extent. We might not know how to yet, but if it interacts with the physical reality in any way, it is measurable.
If it doesn't interact with the physical world in any way, i.e. doesn't affect our decisions, or is unable to cause causal reactions in the universe, then for all intents and purposes, it might as well be non-existent. It would certainly share all the properties with something that doesn't exist... non-detectable, doesn't affect reality, etc.
I could make the exact same argument for anything imaginary.
The universe is actually made of invisible, vibrating, pink unicorns. They're immeasurable and invisible, but if you're perceptive you can feel them. I can't teach you how to feel them, you either can or you can't.
It doesn't necessarily mean that invisible, vibrating, pink unicorns
don't exist, but it certainly gives us no reason to believe they
do exist. Until you can show positive evidence that spirits or souls do exist, all your doing is showing we can't disprove them; which is a piss poor reason to believe something exists, or we'd all believe in magical, vibrating, pink unicorns.