Everyone has the choice. The controversy about the right to select suicide boils down to a question about your role. All of us want to die appropriately. Usually this is as late as our bodies allow.
Some circumstances seem to justify a search for an early death.
There is no end to the list, because everyone assigns different values to different losses. These are simply illustrations. People in this situation are tempted to try a suicidal mode of self injury behavior to hasten the moment of death. This rational position gets complicated by several dimensions of the individual's character or life style. We all have a wish to die heroically, and suicide seems to promise such an appropriate death.