Easy Prompt,
Your logic is fine. It is your presupposition that is faulty. In the bible, death means separation, not non existence.
For believers, to be absent from the body is to be present with the Lord:
Instead, I say that we are confident and willing to be absent from the body and to be present with the Lord. - 2 Cor. 5: 8
That is not a resurrection. In the bible, not only is the body is spoken of using pronouns. But, the soul and the spirit of man is assigned personhood as well.
BTTT, obviously fire which of this physical life would have at least a different affect on an eternal soul than it would on real flesh and blood.
But, I think it is a mistake to believe that Jesus' detailed adjectives about the torment, anguish, gnashing of teeth ...of eternal duration would be strictly symbolic. At the very minimum it could mean conscious eternal separation from God with the absence of anything good (outer darkness). At the maximum, it could mean exactly what Jesus said that it did.