As a Christian, I believe that there is life after death. This is the period where you get to meet the creator and be judged by your dealings on earth. This is the reason the Bible tells us to live a good life because our actions on earth will determine whether we make heaven or not.
I believe there is something after we die. I think some people get reincarnated, and some get lost and are stuck in a realm between our world and theirs and that's why there's paranormal activity. Either they are confused and not aware that they're dead, or they're bound by other entities such as demons.
I do not think there is a life after death, however, I believe death is not the end of everything. I am a Hindu and according to Hinduism, when people die, soul escapes the dead body and is born again in a new body.