The technology developed for doing such a difficult task will inevitably benefit all of humanity. It did so for Apollo. It will again in the future.
https://launiusr.wordpress.com/2012/02/08/why-explore-space-...
If the idea was not clearly conveyed then let me try again: the money is spent building things that are intended to be destroyed (in order to fulfill their function, but nevertheless), when it could be spent building things that are intended to last.
>The technology developed for doing such a difficult task will inevitably benefit all of humanity.
I've heard this refrain several times. Please name a technology that was developed for the space program and that would have otherwise not been developed.