What you're saying directly contradicts 1 Corinthians 15:44. Paul was not talking about one's soul, he was talking about the body. He said it (our body) is sown a natural BODY, and it will be raised a spiritual BODY. In 1 Cor 15:45, Paul refers to a whole person (body, soul and spirit) as a living soul, but it is the BODY that will be raised, as 1 Cor 15:44 specifically says. And it will be raised "a spiritual BODY".
There's no contradiction. Paul is using SEEDS as an analogy to illustrate the resurrection. Seeds contain DNA, which are instructions on how to make the body.
1Co 15:37 And
that which thou sowest, thou sowest not that body that shall be,
but bare grain, it may chance of wheat, or of some other grain:
1Co 15:38 But God giveth it a body as it hath pleased him, and to every seed his own body.
The BARE GRAIN (seed) may produce wheat (Mongolian), or some other grain... barley (Negroid), oats(Caucasian). <<<< Illustrative purposes only, I don't know what each seed represents. The point is that seeds don't get planted in the plant, they get planted in the growing medium and then produce the plant.
You argue that "it" is the human body, a simple exchange of "it" with "the body" should show clearly that "it" IS NOT the human body.
1Co 15:42 So also is the resurrection of the dead.
The human body is sown in corruption;
the human body is raised in incorruption:
What is the corruption the human body is sown in?
1Co 15:43
The human body is sown in dishonour;
the human body is raised in glory:
the human body is sown in weakness;
the human body is raised in power:
What is the dishonor the human body is sown in?
What is the weakness the human body is sown in?
1Co 15:44
The human body is sown a natural body;
the human body is raised a spiritual body. There is a natural body, and there is a spiritual body.
The whole point of this story is that God plants the seed in a weak, dishonorable, corrupt human body (our mothers womb) and that seed produces ANOTHER weak, dishonorable human body and that body has to die BEFORE before the soul can move into the spiritual body.
Also, Paul said that our bodies will be redeemed, so don't try to say otherwise.
Romans 8:23 And not only they, but ourselves also, which have the firstfruits of the Spirit, even we ourselves groan within ourselves, waiting for the adoption, to wit, the redemption of our body.
Look at the definition of redemption, it doesn't mean restoration it means riddance of or deliverance from.
ἀπολύτρωσις
apolutrōsis
ap-ol-oo'-tro-sis
From a compound of G575 and G3083; (the act) ransom in full, that is, (figuratively)
riddance, or (specifically) Christian salvation: - deliverance, redemption.