Jesus states this principle when he said that the Sabbath was made for man and man was not made for the Sabbath. Sure, God is the object of our worship. God desires our worship, but the purpose of worship is to keep our lives in perspective. Worship allows us to see beyond the materialistic world. What we do in life must be done from a spiritual perspective.
Worship provides time for reflection, which is an important part of life.
At times I have worked real hard trying to make a sermon work. I have gotten frustrated and forced myself to lay it down for the day. When I come back to it the next morning it begins to flow. Sometimes you can take a 15-minute break to reflect on what you are doing and during those few minutes of reflection you gain a totally new perspective of what you are doing. It was then that he created woman.