No flesh lives in heaven. Its the spirit realm. His body was raised. You actually think he wanted to remain in the flesh when he was spirit all throughout from his creation onward?
So says you- God says different! Jesus raised His body from the grave and ascended to heaven in that body now glorified which will happen to all who believe in His death and physical resurrection for sin!
Until you accept that truth- y0u have no part in the kingdom of God, no matter how religious you are with the Watchtower.
John 2:19-24
King James Version
19 Jesus answered and said unto them, Destroy this temple, and in three days I will raise it up.
20 Then said the Jews, Forty and six years was this temple in building, and wilt thou rear it up in three days?
22 BUT HE SPAKE OF THE TEMPLE OF HIS BODY.
22 When therefore he was risen from the dead, his disciples remembered that he had said this unto them; and they believed the scripture, and the word which Jesus had said.
Until you can accept that- Gods wrath remains upon you --John3:36.