Has anyone ever shown concrete proof that the afterlife exists? To the best of my knowledge, no. People want to believe in the afterlife to give themselves the comfort that they will not be gone forever once they die, that they would have a "afterlife". Stories of people claiming to have received a message from someone in the afterlife, or seen someone in the afterlife, are most likely born out of the desire to see that someone that has died.
Has anyone ever done any research that suggests that an afterlife exists? Has he/she published a report that has been accepted by the scientific world?
No. That is why the belief in the afterlife is purely based on emotion and desire and has no logic to support it.
I'm Christian, and I choose to believe in heaven, but in a way I kind of don't think it exists. Science trumps religion, as we have actual proof that science is correct. It's one of those things you just have to accept. And all the other religions are wrong, and yet they almost universally have a form of heaven in it? That's just how the human brain wants life to be- no one wants to think death is really the end.
So it would stand to reason that afterlife in general is based on emotion and desire. There is no evidence for the afterlife and all we know is that we live and we die because of physical causes and effects of the brain which will soon decompose. All we know is that we have a brain and we do not know that we have a spirit we believe in it only and it just so happens to be what we want to believe? Life is never what we want it to be. The only times it is its only because we don't know any other possibilities. We would want differently if we knew what could be. Everyone could know right from wrong instead of making up their moralities and arguing that they are objective while so much less than .00001 percent of them can be completely correct and most of them have to be completely wrong if objective morality exists. So subjective morality definitely exists and bad principals are the root of bad practices. We all want to do differently and live our lives over but we cant and aren't given the good sense and knowledge we need to make the decisions we all end up wishing we made. If the afterlife exists then where is the evidence? Other dimensions are only theoretical and even if they exist there is no proof evidence or premises for the belief in the soul and why would god give us a body that supports cognition and a soul that does turns on and does the same thing when we die? Why not start out in that other dimension? It could be just like this in the other dimension in a certain place in that dimension as we are so small compared to the seemingly endless space we know about and I can only imagine that the other dimension that god created is just as big if not bigger. Guess god likes going the extra mile for no extra benefit. But then again nothing about Christianity or any religion makes sense. Its not our faults we aren't stupid enough to believe and if anyone is going to hell its religious people who are so lazy in their thinking that they look no further for a morality than their local churches or parents. Bad practices are the result of bad principals and bad principals are the result of lazy thinking. If someone gets wronged because your lazy I can only imagine that god would teach you what you've done by hurting you back assuming we have free will which we don't and that throws the whole afterlife out the window because its obvious that without free will we don't have a spirit.
As far as beliefs in going on to a place like heaven, yes, this is likely. Prior to the existence of religion, early mankind may have posed a simple question to himself. What happens to us after we die? This only gives two basic options, we either stop existing at the time of death or we continue afterward. I am sure, if given a choice, we would want to continue. After all, we want our lives to have meaning and value. Thing is, we don't have a choice. You may want to be able to sprout wings and fly like a bird but that does not give you that as an option. Because assuming we end after death sounds less pleasing, much of mankind decided to believe in the more pleasant theory.
In my opinion, I would not want to continue forever even if it was in some theoretical heaven. No matter how good things are, eventually even the good would become unbearable turning the best heaven into an eternal hell. Example: Sure, you may get to observe the life of friends and family but you would also witness their death. Further watching the living would make a person long to still be alive. Something that they can no longer be. Just watching people live lives would remind you of what you are no longer capable of much like a crippled runner watching a track team, watching would become it's own torture.
On the other hand, if you are talking about reincarnation, it would likely be based on the evidence of the world around us. When something dies, it often is the cause of other life to flourish and in many cases for other life to begin. This is a process that we all know exists so it is very likely that reincarnation was based on this process. To the best of my knowledge, most reincarnation beliefs don't claim that the individual exists knowing of their past but that it is basically the life force that lives on.
I am not saying that I believe in reincarnation as it too implies a supernatural existence. Even if the belief does not include a god, there would still need to be some kind of supernatural force to guide a life force into another or to choose what form the person will become.
When religious people try to debate gods existence they always bring bible quotes in the debate. They also go on the feeling they get when they pray and how god has touched their lives. On the other hand Atheist have tangible facts. Theories that are backed up by science. We might not have everything answered but we have more proof supporting against the possibility that god exist.
Ever heard of the Totalitarian Principle? Everything not forbidden is compulsory. Given that there is literally nothing contradicting the existence of souls, and therefore, an afterlife, in terms of hard science, the existence of an afterlife should be assumed to exist. Until such a time as instrumentation can be made to detect whether or not there are souls, the existence of an afterlife is to be considered a fact.