I have no memory of ever being unaware of the concept of death (keeping large numbers of budgies helps with that; deceased birds were routine), or of ever being at all bothered by the idea. Everything dies, water is wet, fire is hot.
Never considered the afterlife to be a realistic possibility, either; atheist parents, secular country.
I do have a clear memory of being six years old and considering how I would like to die when the time came. “Fall from a great height” was the winner at the time. It seemed to be both quick and scenic.
However, I was a pretty weird kid.
