For Reasons Unknown by The Killers is a powerful exploration of change and the passage of time. This alternative rock anthem from the United States captures the feeling of losing oneself and the struggle of maintaining one's identity through life's transformations. The song's key themes include self-reflection, emotional turmoil, and the inevitability of change. Particularly poignant moments in the song include the chorus, where the protagonist laments that 'my heart, it don't beat, it don't beat the way it used to,' signifying how personal changes have affected his emotions deeply. Similarly, the lines 'But my eyes still see' suggest a lingering awareness despite emotional numbness. Overall, the song speaks to the universal experience of grappling with inner change while trying to stay true to oneself.