but Paul's description of flesh as "corrupt" is more to do with the fact that it's limited in life.

There's also his use of "sarx" which, in Christian thinking, doubles for both flesh and sinful nature. The Christian theology that the life is tainted with sin is not Platonic.

I'm not sure, either, that your representation of 1Cor7 is nearly accurate. Paul postively encourages sex within marriage. Hardly a marginal acceptability.

As for your last paragrpah, I'm sorry but I just don't see it. It simply doesn't bear any relation to the scripture that I read every day.