I believe in an afterlife. I'm Christian so naturally I believe that the afterlife is about eternal peace with relatives and loved ones. There isn't anger, sadness, temptation, resentment, or even envy. Just peace.
The Bible compares death to sleep (Genesis 3:19; John 11:11)God has a limitless memory, and he promises to bring all the dead who are in his memory back to life here on earth. The Bible guarantees this at (Psalm 68:20). Some may argue that on the subjects of death and the afterlife, the Bible is confusing. We must face the fact that the confusion is caused by the many religions that twists the words of Bible teachings with fallacies and legends. But sticking to what the Bible actually says, people can discover a teaching that makes sense and offers hope for the dead.(Revelation 21:4)
There was a time when many things we are aware of today were considered impossible, there's no way I could rule out the possibility of some kind of continuity.we know without a doubt what happens to the body. But that spark of awareness is what separates us from other species. We are special in nature. We have no idea what we are.Don't take this as a religious statement, I believe in a creator, the Heaven and hell thing is not a belief of mine. if they do exist I suspect they are very small places, in my 70 years I am aware of very few that would qualify for either place.
( 12 ) And certainly did We create man from an extract of clay.
( 13 ) Then We placed him as a sperm-drop in a firm lodging.
( 14 ) Then We made the sperm-drop into a clinging clot, and We made the clot into a lump [of flesh], and We made [from] the lump, bones, and We covered the bones with flesh; then We developed him into another creation. So blessed is Allah, the best of creators.
( 15 ) Then indeed, after that you are to die.
( 16 ) Then indeed you, on the Day of Resurrection, will be resurrected.
( 17 ) And We have created above you seven layered heavens, and never have We been of [Our] creation unaware.
Usually, what people who ask this kind of question really want to know about is the possibility of the survival of a personal identity, or individual self-awareness. A separate and distinct consciousness. Based on my understanding (such as it is) of the second law of thermodynamics (aka entropy) I do not think that is a possibility. However, quantum theory suggests that the laws of physics as we have understood them are not necessarily universal in effect - more like local by-laws, perhaps. I am not prepared to discount the possibility of a collective or cosmic consciousness just yet.
I believe that we were sent to earth, by God, for a specific purpose. We lived in God's presence before this life as spirits. He sent us here to gain a body so that we could be tested. We learn from our earthly experiences and all the knowledge we gain in this life will be carried with us after this life. This life is short, but we are all destined for greater things. We will all be resurrected and then stand before God at the judgement bar to report on our obedience to his commandments.