If it was true, but it's not, annihilation would be good news for the sinner who refuses to repent but this is not Bible, that's doctrines taught by demons, Jesus already purchased our freedom from the wrath of God, from the great white Throne judgment and from the Lake of fire but this was all done positionally meaning it has to be received by faith and if it's not received by faith then those individuals have to pay for it for themselves which will take an eternity because of the gravity of sin, the debt and the consequences of sin.