For the cost of a manned mission to Mars, you could buy every man, woman and child in my country their own private helicopter, although necessary modifications to the air trafic control infrastructure would be extra.
Ask yourself where would be without exploration. Probably exinct.
How will landing a man on the moon keep me or you or anyone else from becoming extinct?
But our constitution is flowery as well.
I've read your Constitution. It isn't flowery, nor does it suggest that the purpose of the United States Congress is to allocate vast sums for zero public benefit.
Good, now read Calhoun, Sec'y of War.