The social situation wasn't described in much detail, but generally I can say that they were all well insured, they were all from middle-class or higher-class families and they purposely chose death knowing about the suffering they had gone through and having heard their prognosis of certain death. Also, both parents in all those situations agreed. There was no conflict.
From the medical point of view, there was full understanding and consensus that the suffering could not be ameliorated in another way, so there was no discussion there.