It's interesting how original Hurt by NiN has very different vibes than its cover by Johnny Cash. It's like it's different song, but still the same. Both deep, just different.
The best way I can describe the emotional difference is that Reznor's version depicts ruinous destruction of a young person's life, and Cash's version depicts a lifetime of regret. Their literal ages obviously help convey it, but the arrangement and style really sell it