Right, flesh and blood cannot inherit the Kingdom of God in Heaven that is in existence now.
You are making me LAUGH, because you are vainly trying to manipulate the Scripture so you can keep your false fleshy tradition by saying the body type of the resurrection is a new flesh body. You might as well go live in the Far East where the theory of reincarnation is accepted by the majority there.
And no, I'm not interested in starting another thread on this matter about the type body for this world, which DIRECTLY RELATES TO THE TOPIC OF THIS THREAD.
So here's the WHY... our flesh body dies, which answers your thread question AND even goes far beyond your Biblical understanding evidently, since you believe the future resurrection is to a flesh and blood body, which goes against the Scriptures like 1 Corinthians 15.
1. God created the flesh body of man for this 'present world', not for the world to come.
2. God brought this 'present world' of IMPERFECTION because of Satan's overthrow in "the world that then was", a world earth age PRIOR to this present world time.
3. Satan coveted God's Throne in the world before, which was when Satan as a covering cherub was created to guard God's Throne (Ezekiel 28). Satan's rebelling back then, and drawing a third of the angels ("stars") into rebellion with him, is what caused God to end that old world, and bring this 2nd world earth age of FLESH.
4. In Romans 8:18-25, Apostle Paul explains that God placed this 'present world' in bondage to corruption, and the creation today seeks a release from that bondage. That reveals a time when God's creation was not... in that bondage, which is about the world before, when Satan actually followed God, when God said he was 'perfect in his ways' per Ezekiel 28.
5. Thusly, our flesh bodies were designed for THIS present world time, and are made to be destroyed, just like Paul also showed with the 1 Corinthians 6:13 verse.
6. The body type of the world to come, once this 'present world' is destroyed by God's consuming fire, will be the "spiritual body", what Paul called the "image of the heavenly". It is a body of spirit, and is of that other dimension of God's creation, hidden behind a veil.
7. On the "day of the Lord", which is that day Peter spoke of for the destruction of this present world by God's consuming fire, ALL still alive on earth... will have their flesh bodies cast off. And that is even shown in Isaiah 25 where Apostle Paul was pulling from about death being swallowed up in victory.
8. The world to come will be about a joining of the earth and the heavenly dimensions together, like it was once before when God literally lived upon this ancient earth.