Does Fate really exist?

Well i believe that fate does exist and that everyone has a path that they have to follow no matter what. For example is it fate that i went to the supermarket to get some bread and they were all out? Is this a sign? Who knows maybe the bread was poisoned and that it wasn't my time to die. well I believe that true love does too exist and we mankind all depend on fate. Romeo and Juliet met my fate and will do everything according to the plan of fate. what would we do without fate?