20-Year Prospect
As good ol' Ben Franklin said, there are only two things for sure in this world: Death and taxes.
Folks need you to hand out the death certificate to prove someone's really dead. Otherwise, those social security benefits could still keep on coming and waste taxpayer dollars.
The family's going to need that certificate to prove the poor dead guy doesn't have to still pay his taxes, and then there's the whole reading of the will that needs to happen.
Besides, people usually want to know why their loved one died.
As long as people keep dying, others will be there to ask why.
This position may end up morphing into more of a hybrid between a coroner and medical examiner, but it's not going to disappear completely. Not until we invent immortality. And that's at least thirty years off.