God made us to come into this world with a great purpose. We are called to know God, love Him, obey His Word, and live for His glory. We are not created by accident, but by the will and wisdom of God. Our lives should therefore be directed toward serving Him and doing His will.
It is also important we are expected to serve and help other people on earth which is another purpose which made us to exist. Jesus teaches us to love our neighbours, show mercy, forgive others, and do good works. Our existence becomes meaningful when we use the gifts God has given us to bless others and to reflect His character in the world.
We are created to prepare for eternal life with God. We have to live our life according to the teachings of Jesus Christ. Our earthly life is temporary, but God calls us to live with eternity in view. Therefore, the true purpose of our existence is to glorify God, follow Christ, serve others, and remain faithful to Him until the end.
