God created us so that

(1) we are the object of his perfect love, and vice versa, we are to love God our creator;
(2) we are to love one another;
(3) we are to become the coheirs of God, inheriting and ruling over, with Christ the son of God and the brother of redeemend new mankind, all creations in the new heaven and new earth.

In plain language, we are to become "playmates" with God and each other.

hohoho... it sounds like christmas in summer :-)))