These groups also run large professional lobbying machines in Washington. In many ways they have become another special interest at the trough of federal largess. Surely, we do not want to put charities on the dole. Furthermore, government funding is antithetical to the nature of charity. After all, the essence of private charity is its voluntary not coerced nature.
Individuals help one another through love of neighbor.
Tax money is based on coercion. There is neither compassion nor love behind a grant of money forcibly taken from taxpayers who may have no desire to support the charity in question. There is no reason to take these risks. Private charity is thriving in America. We are the most generous nation on earth.