... About the Purpose of my Existence

Every day I wonder about the purpose of my existence. I ask, I question, I seek , I get no answer whatsoever. My adopted stray dog killed a birdie I've been taking care of for almost three weeks now. Today was the day that he decided to take a leap of faith and fly...he was learning, jumping happily from branch to branch ... and in a fraction of a second... I couldn't stop her from killing him. I am devastated. I see his parents mourning and I don't know how to explain, I don't understand either. Im angry, don't see the purpose of this whole thing happening, nobody wins, we're all sad...birdie is dead, parents lost his baby after almost a month of unconditional love and care, I feel guilty, my stray dog in a corner, sad... Im sure she feels my disappointment on her. Life sucks right now.