Having a death wish doesn't mean your adventurer is suicidal–but he does want to die after completing some important goal. Maybe he wants revenge for the murder of his family, or maybe he's dying from disease and wants to go out in a blaze of glory. He won't throw his life away for no reason, but when there's a chance to complete his goal, he'll do anything—and take any risk–to achieve it.
This Hindrance is usually Minor unless the goal is relatively easily fulfilled (very rare).
Savage Worlds Deluxe Edition p. 30