Why Juliet wants to commit suicide for love?

Juliet was pretty obsessed with Romeo. One of the motifs in this play is the hasty and impulsive love of these "two star -crossed lovers." Romeo and Juliet felt that love was the end all and be all of their existence. When Juliet sees Romeo dead, she kills herself.

She was so distraught that her family could not accept Romeo that she felt the only way out was to kill herself. She could not live without Romeo.