When it comes to life after death, there may be three possibilities:
An afterlife already exists for you. At the point of death, an entity transfers your consciousness. Every thought you have and action you take may be being broadcast and judged right now. How would you feel if everyone around you now could see your thoughts and actions? What would you change?
An afterlife will exist for you. You pass away, time will pass, and a future entity manipulates time to come back and reach you. It could be that humanity ultimately becomes the judgement entity, so we must do our best to help ensure this happens.
An afterlife will never exist for you. Your lifespan is finite—enjoy the incredible opportunity you have been given to experience the world, that only the tiniest proportion of matter gets to enjoy. Be kind to your body and don't sacrifice your own happiness.