"Reform" or "Reformation" does not consist of merely changing minor rubrics, such as holding hands at the Lord's Prayer.  No; reform , in any meaningful sense, entails fundamental change in doctrine or dogma.  It does not follow that because "The Church is composed of sinful people who make mistakes[,] repent[,] and "Turn to God," that the Church is always in need of reform (change of dogma or doctrine."  By your lights, the Church would be fundamentally changing every day.  Some ":Church,"  The one you attend on one Sunday is gone by the next Sunday --- all because "the Church is composed of sinful people."  Absolutely not.  One beauty of the Church is that it is not "reformed" week after week, or even every decade, but persists through the ages, each faithful Catholic bound to the other across the ages, transcending time and place in the Mystical Body of Christ..