Protestant Latitude

Why is there less discipline among Protestants on certain issues?  The main reason is that they believe in the testimony of the Holy Spirit.  Thus, some Methodists and Episcopalians are divided on the issue of homosexual unions and the role of openly gay ministers.  Lutherans have the Augsburg Confession of 1530 and the Anglicans have their Westminster Confession of 1646.  Otherwise most Protestant denominations do not emphasize dogmatic rectitude, but rather contact with God, Jesus, and the good moral life.