I'm really just repeating myself, but:
Why worry? Because this whole "experience" deal is a red herring. In reality, your death has both a cause and an effect, regardless of whether you experience them or not. Since not all of these effects are something you would desire, and not all of the causes are beyond your control, there is a reason to worry. Since life ends in death, all questiona of "what is an acceptable death?" are round-about ways of asking "what is an acceptable life?" Only a nihilist will think all deaths, and hence all lifes, are all the same.