9) “What influence, in fact, have ecclesiastical establishments had on society? In some instances they have been seen to erect a spiritual tyranny on the ruins of the civil authority; on many instances they have been seen upholding the thrones of political tyranny; in no instance have they been the guardians of the liberties of the people… A just government, instituted to secure and perpetuate it, needs them not.” –James Madison, A Memorial and Remonstrance, 1785 .
10) “During almost fifteen centuries has the legal establishment of Christianity been on trial. What has been its fruits? More or less, in all places, pride and indolence in the clergy; ignorance and servility in the laity; in both, superstition, bigotry and persecution.” –James Madison, A Memorial and Remonstrance
Enslaves and makes ignorant. That oughta be enough reasons right there.