The simple answer: socialism is seductive.
http://www.valuesandcapitalism.com/dialogue/economics/seduced-socialism
From Frederic Bastiat’s essay The Law:
Here I encounter the most popular fallacy of our times. It is not considered sufficient that the law should be just; it must be philanthropic. Nor is it sufficient that the law should guarantee to every citizen the free and inoffensive use of his faculties for physical, intellectual, and moral self-improvement. Instead, it is demanded that the law should directly extend welfare, education, and morality throughout the nation.
This is the seductive lure of socialism. And I repeat again: These two uses of the law are in direct contradiction to each other. We must choose between them. A citizen cannot at the same time be free and not free.
Written in 1850, The Law was Bastiat’s rebuttal to the prevailing pro-big government sentiments of his day. It was assumed then, as it is assumed now, that the government (so as long as it is run by “really smart� people from Ivy League schools) can play the role of Grand Arbiter and fairly divvy up the nation’s wealth without wrecking the wealth-creation forces that provide the Monopoly money for their social experiments (and pet-projects).
This is a fallacy of the utmost order.
(Article is available in its entirety at the link. Zim.)

Mad Poet Strikes Again.