We exist to glorify God.
He [Jesus] is before all things, and in Him all things hold together. And He is the head of the body, the church; He is the beginning and firstborn from among the dead, so that in all things He may have preeminence. For God was pleased to have all His fullness dwell in Him, and through Him to reconcile to Himself all things, whether things on earth or things in heaven, by making peace through the blood of His cross.
Colossians 1:17-20