Some argue that worship is not authentic unless it springs from the heart, is spontaneous, and energetic. If you know anything about Pietism, then you know the source of that teaching.
In contrast, the Reformed tradition is clear that worship is to be organized according to the word of God. This approach takes into consideration the consciences of those who are in attendance, who might be offended by innovation, spontaneity, and pragmatism.
Here is an article that explains why an orderly worship service honors both God and neighbor. Enjoy!