1. One significant reason that Romeo and Juliet should not get married concerns their age and maturity. Romeo is portrayed as a brash, instinctive young man, who is emotional and spontaneous. His dramatic feelings regarding Rosaline and his immediate infatuation with Juliet reveal his lack of maturity and thoughtlessness. The fact that he immediately contemplates suicide after he is banished from Verona also illustrates his immaturity. One could surmise that Romeo's emotional, capricious disposition is not conducive to a pleasant, successful marriage. In addition to Romeo's immaturity, Juliet is only thirteen years old, and her father does not initially believe that she old enough to marry Paris in act 1, scene 2.

2. Their lack of familiarity with each other is another significant reason that they should not get married. Romeo and Juliet decide to get married after knowing each other for less than twenty-four hours. Friar Lawrence even warns Romeo,

Wisely and slow. They stumble that run fast. (Shakespeare, 2.3.94)

3. The last reason Romeo and Juliet should not get married concerns the fact their families are enemies. The Capulets and Montagues have been feuding for some time, and the young lovers' marriage would more than likely cause serious issues and violence to erupt once more between the prominent families.