We are not exiting because of our own purpose. Our existence is because of the purpose of God. It is not because of what we want to become or what we choose that brought us into this world. Our purpose is defined by the purpose of our Creator. Our Creator has plans for our lives. He is the One who needed us, so he created. He created us to come and fulfill a purpose. That purpose is His own.
So, the purpose of our existence is only the purpose of God who created us. It wrong that many of us so not want to obey the purpose of God. We choose our own ways against the ways of God. We refuse to do what pleases God. We always go against the commandments of God. We become rebels against God's Word. This is not good. We must submit ourselves and begin to obey the purpose of.
The truth about our lives is that God created us for His purpose. When we continue to do those things that are contrary to what God wants from us, we are putting ourselves in the position where He can punish us and destroy us.