Music is like any art form. A lot goes into it.
You can think a movie has amazing action scenes, but a terrible plot.
You can think instead it has fascinating dialogue and acting, but its like watching a shitty soap opera or find it boring and can't get immersed.
Lyrics, melody, rhythm, production, percussion, arrangement, voice, video, meaning, timing. Songs can be particular to people and be successful in one way and fail in others.
A truly gifted musician ends up excelling in everything.
Mostly art is about conveying a mood, meaning, expression, or feeling to the listener, and being successful at it. Music is no different from painting or acting in that regard. It just fits more easily into an iPod and is pretty profitable as a business.