After the people of Illinois became too hostile for the Mormons to stay there any longer (and also, after their church's founder, Joseph Smith, was killed as a result of that violence), Brigham Young took over as leader of the Mormons and led the group out of Illinois and to the present-day state of Utah, where they established a colony on the shores of the Great Salt Lake called New Zion.
<span>It prevents despotism by the executive branch and watered down, compromised, indecisive governance by committee by the legislative branch so yes it's a good thing.</span>