I'm also not sure how you stand on Jesus' remarks about Hades or Gehenna either, which have often been explained away as metaphors, but others are more literal in their approach.
The New Testament could be seen (if so interpreted) as worse than the Old, since with the latter - apart from a bit of the Book of Daniel - rewards and punishments come in this life.
Multiple passages in the OT heavily hint and at times skirt around denying an afterlife altogether; it doesn't seem to have been part of historical Judaism. Whatever befell people happened here and now in this life. The idea of
sheol seems to have been a latter addition; a dim, shadowy underworld after death - not at all dissimilar to that posited by the ancient Greeks- to which all went at death irrespective of their acts in life. There's no suggestion of reward or punishment; this is strictly a one size fits all afterlife. Martyr and murderer get the same gloomy smoke-like existence a bit like the Dead Marshes in
Lord of the Rings.
Orthodox Judaism makes much of
olam haBa (the world to come) but Rabbi Julia Neuberger* concedes that a great many Jews are "a bit shaky" on a posthumous state. Life here and now and what happens in it or with it is the only stage of which we can be certain.
I forget who it was who said that purely earthly tyrants and dictators - the Hitlers, the Stalins, the Pol Pots and so forth - seek only to kill their enemies and be done with it. As terrible as that is, that's that. Death will do. The God of the NT however insists on pursuing those deemed wicked into the next world and punishing, in fact torturing them there.
*
On Being Jewish.