If you believe there is nothing when you die: would you stick with that explanation of death if your young child were terminally ill?

If you had to comfort and help your very young child through a terminal illness and death, would you want to tell them more of what you think is a fantasy about what death is like? I say fantasy not to criticize or be dismissive of religious beliefs, but only from the persepective of those who don’t believe in afterlife, they would view heaven and other related explanations as untrue.