And lack in belief is what dictates this destination, which does not even encompass morals, but is instead, amoral. Can someone choose what to believe?
Simple test: Make yourself believe China does not exist. If you can, you have true free will of your beliefs.
If someone does not belief, because they claim the presented evidence is lacking for them, does this warrant the conclusion of eternal condemnation (or an eternal 'blast furnace')?
According to Christianity, this is the axiomatic conclusion or dichotomy presented (i.e.) Mark 16:15-16
'15 And he said to them, “Go into all the world and proclaim the gospel to the whole creation. 16 Whoever believes and is baptized will be saved, but whoever does not believe will be condemned.'