Playing God?

The path of conservatism is like an artery carrying the lifeblood of a country. The red line is a continuum of success. Yet liberals somehow create or allow a cause, a stoppage, a bubble if you will, to form in the line. Consequently, the patient ( our country) will ultimately die. Liberalism ( socialism,communism, progressivism ) never sustains the lifeblood of a nation on its path to greater prosperity. Why does this liberal behavior predictably and consistently repeat failure after failure over time? The perversity of human nature to usurp the role of personal freedom and play God?