What are the most unnecessary things governments do, sponsor and spend money on.   

A case in point:

Originally written by Jacek K. on October 21, 2009 11:13 AM A Rumsfeld-era reminder about what causes Terrorism In 2004, Donald Rumsfeld directed the Defense Science Board Task Force to review the impact which the administration's policies -- specifically the wars in Iraq and Afghanistan -- were having on Terrorism and Islamic radicalism.   They issued a report in September, 2004 (.pdf) and it vigorously condemned the Bush/Cheney approach as entirely counter-productive, i.e., as worsening the Terrorist threat those policies purportedly sought to reduce.  http://www.salon.com/opinion/greenwald/2009/10/20/terrorism/

From http://www.salon.com/opinion/greenwald/2009/11/16/terrorism/index.html?source=newsletter:

The British journalist Johann Hari has written an absolutely vital article for The Independent, examining a growing movement of former hardened Islamic militants who are now devoted to teaching a more moderate and less fundamentalist Islam.  Hari focuses on understanding what motivates some Muslims to turn to radicalism and terrorism in the first place, and how that process can be reversed.  Though these ex-militants have very diverse backgrounds, they all stress two critical facts:  (1) the more the foreign policy of the West is seen as aggressive, violent and oppressive to the Muslim world, the easier it is to convert Muslims to violent radicalism, and (2) the most potent weapon for undermining Islamic extremism is the efforts of Westerners to work against their own governments' belligerent policies. ...

In other words, the very policies the U.S. has been pursuing in the name of combating Terrorism -- invading, occupying, and bombing Muslim countries; locking them up without trials; torturing them; violating the values we've been preaching to the world -- have been the most potent instruments for fueling Islamic radicalism and terrorism.  By contrast, those who have been continuously accused of being "soft on Terrorism" and even being allied with the Terrorists -- those who opposes our various wars, who demanded and provided basic human rights protections and equal liberties to Muslims, who objected to their own governments' oppressive and belligerent policies -- have done more to diffuse and impede Muslim radicalism than virtually anyone else in the world. ...

But warmongers won't quit coz they have powerful sponsors all over the place:

Originally written by Jacek K. on November 2, 2009 10:03 AM   The covert Bush administration program that used retired military analysts to generate favorable wartime news coverage may not have been terminated: http://rawstory.com/2009/10/pentagon-officials-confirm-bush-propaganda-program-ended/   Pentagon used psychological operation on US public, documents show A months-long review of documents and interviews with Pentagon personnel has revealed that the Bush Administration's military analyst program -- aimed at selling the Iraq war to the American people -- operated through a secretive collaboration between the Defense Department's press and community relations offices. Read Part I and Part II of this series.

I put , among other things, research on drugs and space flights. Of course, I meant research on unnecessary drugs, such as spending millions of dollars, on some arthritis drug, which has more side effects than advantages, in the end. I also put excessive space flights, I should have specified it this way, not all space flights, more like one every three weeks. 

I put wars of course and cloning, the most ridiculous thing, one might invent, in my opinion.    

Wars.

Other: where should I start?

The most unnecessary thing governments do is proliferating.

Some of the other things to be opted for (like war) are not unnecessary, they are criminal.

- experiments with creation of the Universe

- experiments with fertilization and birth

- genetic engineering

I do not know if governments do these thing, but people do, harmfully to the laws of creation.