afterlife is a whole different story to heaven and hell, i guess depending on what religion u follow there are a few that believe that you will be granted an afterlife or reincarnation when ur good in the previous life. For me I believe there is such thing as a heaven and hell, but it probably isnt as extreme as what people make it out to be. Heaven and hell are mainly an existence to how we should live our lifes today, because there is hell people obey the laws and do not commit crime, because there is a heaven people act better as a human being and treat others with dignity and respect.....so......no matter what if u do believe or do not if u do not commit any crime or treat others correctly then there's nothing to fear
