Because NASA only gets a certain amount of resources. Two billion dollar differences is a lot of money to that agency. When we go to the moon again, doing the landing and leaving will not suffice. So we will have to have a more permanent presence. With the addition of women the costs go up a lot more.
I think rightwing is on the right track ... what can a human do on the Moon that a robot can't? ... there's absolutely nothing on the Moon that we don't have here on Earth in greater abundance ... and here on Earth, we can just breath the air that's all about ... something robots don't need ...
It was fun going to the Moon ... but it's not made of cheese ... we have no reason to go back ...
if you believe that fake NASA footage ...