The belief that there was nothing and nothing happened to nothing. Then, nothing exploded for no reason, creating everything. Then everything rearranged itself, by itself, using chemical laws that were self-made, with no intelligence and for absolutely no purpose. Then, accidentally, this non-living everything produced living things which evolved into higher living things until we got mankind. All of this, of course, has no purpose and is going nowhere. Which gives us great joy as people, who believe nothing is leading us nowhere and for no purpose. This all makes sense.