I can tell you that unfortunately reality can be even harsher than imagined. What I witnessed in some hospitals in Africa is that these people were treated, but still suffered from excruciating pain, and the painkillers administered no longer had any effect. I saw people dying from terrible diseases or untreated infections, with extreme wasting and agony. However, these things don't only happen in distant places but also in our hospitals, even though they are often kept from the public eye, as they would tarnish the "pro-life" image of the gift of life. The truth is, we are all subject to a myriad of similar situations.
I myself have had friends who died from a simple colonoscopy, others who were left paralyzed from seemingly trivial back surgeries. I knew a man who took his wife to the mountains, and a small stone fell on her head, leaving her paralyzed in bed. And these aren't even the most extreme cases. Worse things can happen at any moment in life, without needing to reach old age. Even falling off a motorcycle, down the stairs, or simply hanging a picture in your home can be fatal.
I also remember the cousin of a friend of mine, a girl who was under 15, who became ill with brain cancer. In the end, no treatment helped. She became obese, and her skin began to peel away from her body due to the excruciating pain, with no way to ease it. And this isn't a rarity. Existence is always frightening, and death and suffering can arrive at any time, without warning.
What I'm trying to say is that natural death, the one we fear so much, is not the only form of suffering. Sometimes, even the path toward that death is an agony we can't even begin to imagine. And, unfortunately, we are never truly safe from what life can throw at us.
Obviously, a premature death is preferable to waiting for all these things to happen at any moment. Something might also happen that prevents you from having a premature death, and then you'll have to adapt to a terrible condition, in which you'll have to live without being able to decide for yourself, because others will decide how much you should suffer, how long you should live, and how your life will end. What could be more frightening?