Annihilation is a false doctrine that teaches a meaningless existence. Meaningless because, if we " just " cease to exist, then where would be that healthy fear of eternal consequences in hell ?
There would be no regrets, no suffering, no conscience, nothing.
If we just cease to exist then we may as well give up right now, we become people of no virtue and people without virtue are people without hope and good and evil would become just what WE want them to be.
Annihilation is unbiblical.
Matthew 25:46
46And these shall go away into everlasting punishment: but the righteous into life eternal.
If annihilation were true, there would " be " no everlasting punishment.
Revelation 20:10
10And the devil that deceived them was cast into the lake of fire and brimstone, where the beast and the false prophet are, and shall be tormented day and night for ever and ever.
and " for ever and ever " would be meaningless.
It would also mean that people like Hitler, for example, would suffer no eternal consequences for their crimes.
This teaches nothing but a meaningless existence and a meaningless conclusion. The fact that our lives are not meaningless is the reason for hell, the fact that we were created for a purpose, that purpose being, rejection of hell and a relationship with God.
Never be overwhelmed by decisions, just consider the right ones and your options will be far fewer.