Anu: mama, I don't want to die ever.
Me: Beta, everyone has to die. But don't worry you have many many many years to live before you start worrying about dying.
Anu: Will I die after you and papa die? Where will we live if you die?
Me: Don't worry, mama-papa are not going to die anytime soon (hopefully!). You will have your own work and house by then.
Anu: Mama, I don't want a step-mother.
(ok now I know what is fueling his imagination. Why can't we have less scary fairy tales?!)