I pick up the dirty clothes feeling somewhat less burdened realizing that this very day is God's. Such upbeat worship is to make the worshippers feel better. First of all, the purpose of worship is not to lift our spirits or make us feel better. Upbeat worship focuses on ourselves and supposedly on our needs and wishes. Secondly, it doesn't even focus on ourselves in an adequate way.
Upbeat worship can make people who are in pain and suffering feel worse.
Life isn't always happy. The crucifixion of Jesus Christ is not an upbeat fact. This reality of suffering should not be denied in worship but fully acknowledged. The cross and Christian faith affirms the overcoming of suffering, not its suppression. Happy worship ultimately trivializes the gospel and is superficial.