To those who insists that society can still function without taxes, I urge you to just consider why there are over 400,000 orphans in the United States and over 150,000,000 around the world that still depend on their respective government's foster systems to survive. Where are these altruistic individuals that we so often hear about in narratives of no-tax utopias?
So to be clear; 51% of people are altruistic enough to provide badly for 400,000 orphans, but those same 51% that voted for the bad support those children are getting today, would not exist absent the government?
I would suggest that maybe most people don't go out of their way to help people because they expect the government to take care of it. That's pretty reasonable considering the United States Government spent $3,450,000,000,000 in 2013, since that's about twice as much money as you would need to give each of those orphans $50,000 every year for 90 years (in a one year budget, I remind you.).
http://www.whitehouse.gov/sites/default/files/omb/budget/fy2015/assets/tables.pdf