Mark Thoma directs us to new research showing that for some, the main reason to go to a house of worship on Sunday morning is the fact that there's nothing else to do (Church and the Bored)As a Catholic, I go to Mass to give thanks and offer sacrifice to God, to give Him his due. These things are a part of living an authentic life. It is a natural human need much like making art. Sure you can say that people make art due to boredom but there is a deeper reason.
There is a human need for down time. There is a need to realize that life is more than the rat race of producing and consuming widgets. The oldest and most successful civilizations throughout history offer thanks and sacrifice. Jews, Christians and Muslims do this and I would guess that the other great civilizations do to.