Its not at all odd because there is no real good reason to do so ATM.
Say even if there happened to be large quanties of gold,
For every pound brought back it would cost 5 pounds of gold to go get.
No thats not an exact figure,
But there are figures available along these same lines for pretty much anything of value that "may" be available on the moon.
Then that "may" part, cost a fortune to find out one way or the other.