I think NASA should be funded and it should not be cut. In fact, I think we should give them more.
Some Numbers: over the entirety of the Mars rover mission (from building/planning the rover to the 2 year mission completion) it will cost 2.6 billion dollars. That is the course of 8 years, so it's about 325 million per year. So that seems like a lot of money, but let's look at something else we spend on: Defense.
The US is the country that outspends on defense compared to any other country. We spend 670 Billion on defense. With these numbers, we could send out a Rover, or have other advanced mission for NASA, once every 2 weeks.
Or we can look at something else: Religion. We give churches tax exempt status. This costs us 71 billion dollars a year.
There's also the "war on drugs" that costs over 15 billion a year.
Obesity costs us over 150 billion dollars a year in healthcare costs.
I feel space, science, and giving kids the sense of wonder, knowledge, and imagination is of a higher priority than organized religions and a paranoid defense. Then again, I'm a scientist and know the hell it is to even apply for grants to do some potentially great research.