Atheists reject God because they prefer to disobey His laws
People fear death they fear the unknown.
No one alive knows if there is an afterlife.
If God does not exist, we will die without having our atheism or belief in God confirmed.
If there is an afterlife, it must be either pleasant or unpleasant.
We prefer to think the good deserve heaven and the wicked hell.
If there is an afterlife, a divine judge must exist to administer justice.
Divine justice must be better than earthly justice, if it exists.
Most people would prefer to think divine justice exists.
Those who reject divine justice reject divine laws.
They reject divine laws because they do not wish to obey them.