Romeo and Juliet- A tragedy

I recently finished Romeo and Juliet in English a few days ago. The only thing that really stood out to me was how many times Juliet threatens to kill herself. Somewhere around five or six times if I recall. She waves around daggers like playthings, mindlessly drinks mysterious potions that old men give her, and even considers throttling herself with the cords that her lover will use to climb up to her balcony. She's even desperate enough to kiss deceased Romeo in the hope that poison remains on his lips. Eventually she seizes the opportunity at the monument of Capulet when there's no one around to stop her. She evens seems joyful to execute (pun intended) the dark deed. "O happy dagger; let me die!" Not an exact quotation, but I'm sure its close enough to Shakespeare's original to get the point (NO pun intended). Overall, the general theme I received is that when you're in love, you do stupid things. Even if you're lover's dead, he who killed your cousin and murdered your suitor, crashed your party, was banished (excuse me, banish-ED) from his hometown, and illegally bought drugs from an apothecry in Mantua (remind me if he did anything else that was stupid).