The problem with “hell” is the two issues the orthodox Christian church have attached to this. Firstly it being a place of punishment, and added to that, they claim it to be by fire. The second issue is the claim that it is eternal in nature.
Taking the last point first, the concept of a loving Father is inconsistent with this idea of eternal punishment. What you can find in the Bible is that after Jesus’ death he went to “hell”. If hell is indeed eternal, why would he go there? And indeed hell is not a permanent location. In arriving at this doctrine the Christian theologians have confused a number of things. They have confused these things because they do not understand the structure of the spirit realms we all go to after death, nor do they know where the “Kingdom of God” might be, that Jesus said we needed to be reborn (of spirit) to enter. These spirit realms we go to are not the eternal realm where God dwells.
To stick with hell, the first point is simply stupid. After death we are not affected by flames. If there is an unpleasant place, it is not caused by fire.
Now I can tell you there is a hell, and its caused by the Law of Attraction. In other words, take the worst people you can find, and put them together with others who are just exactly as bad, and you will have hell. But I don’t think I can prove this to you from the scriptures. But you will find Spiritualists can attest to this. There is more than enough detail to convince an open-minded person of this. But its outside scripture.
I can go one step further and make the claim that the “Lower Heavens” (of which the NT does speak – 3rd Heaven) are also caused by the Law of Attraction, so this one spiritual law causes both the heavens and the hells, and yes they are almost infinitely graduated. And none of this has anything to do with “salvation”, because this is not the Kingdom of God. It is the Kingdom of Spirit. Now the Kingdom of Spirit is a place of progression, in other words spirits do get out of the hells, and spirits low in the scheme of things do progress further.
I will answer in respect of demons. Almost all “demons” are nothing more than dead humans who are very dark and evil – inhabitants of the hells. There are some rare other creations, which is merely a diversion to this discussion, but I like to be accurate with my statements. There are no longer any devils at all where that meaning of devil is an evil creature more powerful than us, or the good angels who help us. On the other hand, these dark entities that exist today do cause grief, and while they should not be feared, extreme caution is advised. I have interacted with them, so I do know from personal experience.