Also, to support my point regarding wastefulness, look at this article from the Washington Post that cite a report made that found that out of $1.3 trillion collected, $616B was found to be wasteful, that's 47%!

http://www.washingtontimes.com/news/2014/apr/14/editorial-wh...

This doesn't even start to look at the cost of foreign adventurism or the war on drugs, and all the programs to attempt repairing the damages caused by these efforts.