I was recently reflecting on this and came to a conclusion that might be helpful for everyone.
Whether or not things happen after death goes beyond our intellect, perception, or anything else related to it. No one has been able to corroborate it beyond cases that might be considered abnormal or exceptional, such as people who fell into a coma and had those kinds of experiences. But let's assume that our brain has unimaginable capabilities to reinterpret reality and assume that such and such is real, like someone having visited heaven, having seen God, or even having Jesus take a walk with him. Drugs and psychoactive substances are proof that our mind has the potential to take us to points where our senses are completely altered, and notions are transformed into something that can seem so real that some people get stuck in the so-called "trip." Consequently, the mind is the key to all those notions of "What happens after death?" And you can choose to believe in paradise, heaven, hell, reincarnation, and let's be honest! It's fun to fantasize and imagine when we're faced with a disgusting reality.
It might sound stupid and perhaps unpleasant, but as a pornography and masturbation addict, I've noticed that what excites you isn't necessarily a realistic stimulus or that you're literally having sex to reach climax. Things like animations, even sounds or fantasies can lead you there. Therefore, the mind is an incredible engine that can make you believe that the afterlife exists, that reincarnation, purgatory, or countless other things await you. You can choose to believe in whatever you prefer, or you can accept that nothing exists, because so far, that's all there is in terms of probability and logical sense.