Imo, quit worrying about heaven and hell. There is no condemnation. Your purpose is to screw up here. God understands that, apparently man doesn't. As for Satan... there's none of him. Man has been scared of himself all these years and calling him Satan. Satan's not actually an actual entity, but is more a representation of man's own thoughts and misguided truths appropriated about the universe. All the bads thing wrought throughout time hasn't been caused by Satan, it's been caused by us. No religion in this world has an exact reprensentation of the word of God. The very act of this dimension causes things to be scewed. It's like sticking a straw in a glass of water, the truth will be bent here, no matter how good the intentions.
We're all meant to be a creation of God's own image, as we are. The only thing that screws it up is our own misknowledge of the situation. The more you learn the more Godly you became, hence less fear, hate, pain, and etc. Obviously the more you know the less there is to fear. You'll become more of an exact representation of your creator.
Imo there is only one deity in this universe and thats God, which represents pure love. So there is nothing to fear. So don't fear God, don't fear Satan, the only thing we have to fear is ourselves. And the more evolved the human race becomes, we won't even have to fear that. And then....Perfect peace.
Just my two cents..