Don't Wonder Why by Stevie Wonder explores themes of love, reflection, and the passage of time. The song delves into the inevitability of changes and the importance of cherishing moments with loved ones while they last. Key themes include the fleeting nature of life and the importance of understanding and accepting the inevitability of change. Particularly poignant moments in the song highlight the emotional depth of realizing that questioning the reasons behind certain life events is less important than appreciating the time shared with others.