The phrase 'もうどうでもいい' carries such a complex mix of resignation and emotional exhaustion that it's tough to capture in translation. I remember listening to the audiobook version of 'Norwegian Wood' and being struck by how the narrator handled this sentiment—there was a delicate pause followed by a weary 'I don't care anymore' that somehow retained the original's weight.
What's fascinating is how different narrators approach this. Some opt for a flat, monotone delivery to emphasize detachment, while others inject a hint of sarcasm or bitterness. The English dub of 'Neon Genesis Evangelion' had Shinji's famous line 'I don't want to' evolve into a full-blown 'Just leave me alone' in later episodes, which arguably carries similar energy. The key seems to lie in vocal texture rather than literal translation—a sigh, a hesitation, or even an intentional lack of emphasis can convey what words alone cannot.