Romeo & Juliet - Cause of Deaths

I think that Romeo & Juliet died as an act of fate and human error. Some people may say they died because everything was too late like the letter was taken too late, but i think that everybody being a little late is the fate part in it all. everything happens for a reason, and if Romeo & Juliet couldn't be together alive, their together dead. That was their goal in the first place, to be together.