The modern world teaches us to ask, of every event and relationship, “Now what good will this do me?” The modern world teaches us to make ourselves the center of the world. We have no more important project than ourselves.
Christian worship is counter-cultural to all this. We do it, not primarily to “get something out of it,” but to give something to it. We do it because we are in love.
Try this example. You are walking hand-in-hand in the park on a beautiful spring day. At some point, you lean over and kiss the one with whom you are in love.
Now, if someone asks you, “Now what good does that do you? What good do you get out of it?” It would be stupid question to ask. Gestures like kissing, hugging, are the actions of lovers. We do it out of love. We do it, not “to get something out of it,” but rather to offer something to the one with whom we are in love. Christian worship is a lot like that.