NASA does much more than space stuff. They are also a primary research organization for aeronautical research and aviation safety.
You'd need a tableful of Chicago-sized phonebooks to list all the technology that is directly or indirectly tied to NASA programs.
With the budget cuts, and the need to maintain good PR to keep the little bit of money they have now, things have had to slow down. I agree, it's truely a pity (IMHO) that the feds (reacting to the public's apathy) have decided it's not worth the money or effort.
All that money in the private sector wouldn't work.....they'd just get sued for being a monopoly and all the money'd go to the lawyers. Some things just gotta be run by the government, and IMO, space research and aviation safety fall into that category. Much of NASA's research budget comes from the private sector, or universities who pay to have their experiments run in microgravity. Even IMAX pays big bucks for the space crews to shoot some video.....
On the other hand, think of how much better you'd be healthwise; jogging or biking with 50 pounds of radio and batteries strapped to your body.
Feed the starving? Here? In the US? When was the last time you contributed to, or helped out at, a food bank, or worked a soup kitchen? Or do you just want everyone to dump in some cash (via taxes) so that SOMEONE ELSE can do the work.... like one of the other (less-than-steller-efficiencywise) government agencies?
Try some time in the third world, see what starvation and poverty look like. Hint: Poverty is NOT when you have only one TV, an old VCR, a microwave with no turntable, and a car that's more than 6 years old. Many of the "poor" in this country would look like JP Morgan in some other places.
AND...BTW: NASA has been conducting agricultural experiments for decades, with benefits to the terrestrial agro community ...more crops, cheaper crops, more surplus to help feed the hungry.
With the possible exception of the Military / Defense Industries, NASA has done more to improve living (with technology / research) than any other branch of the government, and probably the private sector as well.
JM.02
Scott