You can certainly dream up and experience a classic version of Christian hell. Not just one hell, but an infinite different kinds of hell. Some with demons, others without, and so on.
But just because you CAN do that, doesn't mean you will or have to.
It's important to take responsibility for the shit you're dreaming up. If you start imagining demons every day, over and over again, yeah... they will start to become a part of your reality.
The cure to all this is to realize, "Oh yeah! I'm imagining all this and I have some say in what I would prefer to imagine."
If you don't like hell, then stop creating it!