It is hard for me to question this. I grew up in Huntsville, AL - 'Space City, USA' my childhood memories include test firings of the Saturn V engines. I knew everything about every flight. I thrilled with each accomplishment. I loved the shuttle. I wept at each tragedy. But I stopped last week when Endeavour landed and thought about the future. I thought about the incredible costs and wondered why. Why spend those trillions of tax dollars when there is no money? Why spend humans into space? Why use tax dollars at all? Maybe now is the perfect time to pull out of space, except for defence purposes of course. If the taxpayer is not paying the bill I suspect the private sector will race to develop the needed technology. Apart from what is needed for security NASA could open source her knowledge banks to give the private sector a boost. As much as I hate to ask it -why do we still spend tax dollars in space?