The Feud is to Blame
Romeo and Juliet's death.
Another reason, as to why the blame of the deaths is the feud, is that Romeo and Juliet’s relations are unacceptable. Since Romeo is a Montague and Juliet is a Capulet, the feud restricts them from announcing their relationship public. If the did make it public, they would permanently be refrained from seeing each other. In the passage, spoken by Juliet's Nurse, it states, “His name is Romeo, and a Montague; The only son of your great enemy" (Act: I Scene:V). The text shows Juliet has fallen in love at the sight of Romeo. Juliet’s nurse informs her that her love is the son of Lord and Lady Montague. Juliet knows that they can’t be together, but Juliet is so in love with Romeo, that she would take the chance.