Everyone else has covered the issues regarding right to die, experimental techniques, etc, so I'm going to cover one that no one has brought up yet. Jean Luc Picard is a complete and total hypocrite in this episode.
In an episode called Reunion just the previous season Worf acts within Klingon law and tradition by challenging and killing the murderer of his mate, K'Ehleyr. For that Picard dressed him down, lectured him about not bringing his culture onboard a Federation starship, and asked him if he wanted to resign. In this episode he does the exact opposite and actually tries to convince Riker, by trying to help him see that it is BECAUSE of tradition and belief, to participate in a Klingon ritual that would assist Worf in killing himself. That can not be rectified within the continuity of the character.
In an episode called Reunion just the previous season Worf acts within Klingon law and tradition by challenging and killing the murderer of his mate, K'Ehleyr. For that Picard dressed him down, lectured him about not bringing his culture onboard a Federation starship, and asked him if he wanted to resign. In this episode he does the exact opposite and actually tries to convince Riker, by trying to help him see that it is BECAUSE of tradition and belief, to participate in a Klingon ritual that would assist Worf in killing himself. That can not be rectified within the continuity of the character.