There are possibilities for enemies even to God. Some people blame God on seeing the millions of suffering and starving people in this world. They don't understand that God is responsible for what He had created and human beings are responsible for what they have created on this earth. In fact the relationship between God and human beings is just like a relationship you see between a scientist and his robots.
God never bothers who believe in Him. God cannot watch each and every human being at the same time and cannot live with each and everyone to guide them. That's why He had created different kinds of spirits for various purposes. He had made the spirits to watch, guide and determine the destiny of the human beings from their daily activities, talks and thoughts too. Your past determines your present and your present determines your future. God has given freewill to all creatures including human beings. According to this, all human beings have all right to live a life as they wish. But if it happens to be bad and hurts someone, they have to face the consequences. These consequences are created by spirits. It's a natural system. After death no one lives in any form. Heaven and hell are only for spirits. Spirits are separate elements. A human being is not a single spirit. A human being during his/her life time is living with many spirits which have joined one by one since birth. They are knowledge, skills, feelings, emotions, interests and everything. Even thoughts are not your own. For example, when you want to take a decision on a subject, one after another the spirits think and you just listen, choose or reject the ideas which they transmit to your mind through your brain in the form of thoughts. Brain is just a media to connect the spirits to your mind. A mind is just a computer's mind. After the destruction of a computer completely you will not get it's mind. The same is the case with the human beings. Soul is nothing but an energy needed for the functionality of a body. It is not a spirit or anything else. All human beings are just robots made of flesh and bones and toys of the spirits for their games.
Finally there is one more thing. There is always a common fate which is always applicable to all creatures including human beings. That is, we are like other creatures except that we have an additional sense (sixth sense). This sense had changed only the living conditions of the human beings but not the fate. The fate is almost same to all creatures including human beings.