The meaning of "carnal" is being led by the flesh, or fleshly mind.
Now we are starting to get some commonality.
A "fleshly mind" is, after all, a mind, not a body itself. And yes, Paul warns us against following the ways of the "flesh" in this sense.
That is quite a different thing than discarding the whole material creation as of no importance except as housing.
Our modern term for the "fleshly mind" is "consumerism" and nothing could be more antithetical to the respectful care of either our own body or the material creation than consumerism and the fleshly desires that drive it.
A similar, though not identical term is "worldly" and this is a term that refers primarily to human societies, to pursuing the goals set before us by a society gone wrong: fame, wealth, power instead of the path God calls us to.
But again, this sort of worldliness, like fleshly desires, has little or nothing to do with rejecting the wonder and beauty and value of the material creation, as long as we view it through God's eyes and love it as God loves it. In fact, the pursuit of the worldly-minded is antithetical to the reverent care of creation which is our mandate from our Creator.
Whether we call it greed, lust, pursuit of power, worldliness, consumerism, or a fleshly mind, what we are talking about fundamentally is egotism and selfish pride. And that is a sickness of the spirit. It is expressed through the misuse of material things, including our own bodies, but at bottom it is a sickness of the spirit.
Christianity is leaving behind the world's minds eye which is "materialism". In the civilized world material is king/the way. That's the same as consumerism.
Yes, that's right. It is about leaving behind materialism and consumerism. It is about leaving behind the way of the world.
But it is not about leaving behind the body or the material world God made.
Rather it is about healing the sickness of the spirit so that we can express our material
and spiritual natures properly in harmony with each other.
The body of Christ isn't the his material body
"body of Christ" has several meanings. It is the Church; it is the consecrated bread. But it is also the body of Jesus of Nazareth and that is decidedly a human, material body. Christianity makes no sense if the reality of Christ's incarnation as a human being is denied. It is a human being, with a human body, who was born in Bethlehem, raised in Nazareth, preached in Galilee and Judea and was crucified and buried in Jerusalem and was raised from the dead by the power of God. To that all the apostles are witness.
--it's his embodiment of the spiritual things that make one human (collective spiritual characteristics).
One cannot be human on the basis of spiritual characteristics alone. The body is also necessary. After all, in Hebrew, the very word for 'man' ('adam') means "made of earth". There is no human without a human body. Just as there is no human without a human spirit.