Here is why I am grateful for experience. It has taught me that nothing lasts forever, not pain, not joy, not anger, not even passion. What these things do, however, is morph into something else. It is often called experience, but what it really is, is you. You are your experiences. Experience informs what you do everyday, every moment. Without experience, we would be pure stimulus and response running around in a world that is nothing more than a flash in the pan. We learn from our experiences. And if we don't, well, we get to experience them again until one day we look up and realize that we are the sum total of our experiences and how we handle them.
It is up to us every day to interpret what life hands us to grow and to move on. That is why we form relationships, participate in daily activities and reflect and dream. It is up to us. But we are not alone. So I say be grateful for whatever comes your way. It is a lesson, whether it be pleasant or unpleasant, but it is yous to learn. And let experience be the teacher it was meant to be.