Have you noticed that the things that go on forever in media (soap operas, comic franchises) tend to become zombie-like and be consumed mindlessly rather than having any cultural value? In many respect, death is what makes life so interesting.
Though I disagree with your premise I’d gladly take a longer life for a more boring one. Life is already a monotonous routine for most. Dying at our own will would let us live to experience anything we want to experience.