Of course, we have no reason to believe Dante regarding the afterlife. His Inferno is based on the Aeneid, not the Bible. Its prime source is pagan and so its presentation of the afterlife is heretical.
Purgatory is a fairly recent Catholic doctrine and there is no reason to believe in it. The Eastern Orthodox Church contends that Purgatory does not exist, although it might be more accurate to characterize their view as saying that Purgatory exist but Hell does not, as their version of Hell is more like the Catholic Purgatory or Limbo.
Back in the second century, such saints as Justin Martyr insisted that all the orthodox Christians, as well as all true Jews, believed that the soul was naturally mortal and died with the body but would be resurrected with the body in the last days. (In this view the soul does not necessarily have to be anything mystical, but could just be the pattern of the neural network.) The bible declares that God alone has immortality, so only those souls that remain in Him can live forever and the souls of the wicked will simply cease to exist rather than suffering eternal torment. (Of course, Justin's Logos theology allowed for many souls to be saved through Christ despite them never knowing they were Christians
I don't think that there is no way to know for sure (at least in this life), but I find Justin Martyr's view the most appealing and the most compatible with scripture. Origin's view that those in hell will eventually repent and make their way to heaven seems appealing too, but declaring that all of them will rather than all of them can be redeemed does seem like a wrongful denial of free will. While Origin was declared a heretic, I believe only the assertion that no soul can reject God forever was actually condemned, not the idea that repentance might still be available after death. Of course, even if those in hell can be saved, that is no excuse not to come to Christ or not to evangelize in this life.