The space effort is one of maybe three or four government programs which actually have generated wealth beyond expectations. Consider highways, the TVA, and othr federal water-supply projects. Otherwise, it's a consumption of tax money without any real addition to goods and services.
The space effort? A return of at least 10:1 over the budget. Probably more, now, when you consider the spinoffs from the spinoffs. Think about the impetus to miniaturizing computers and the R&D involved, just for one--and then consider what we can now do via computers.
Think about communications: In 1940, just in New York City, had the old human-operated plug-in switchboards still been in use, it would have taken the entire female work force of the city. Now, via computers, the whole world is interlinked with few hands-on people involved.
Then, the world of medicine and the many advancement in tools engendered as spinoff. Heck, just Nomex has save many, many lives. Much of what we now know about machining exotic metallic alloys comes from space effort needs.
In business, the whole concept of "critical path" coming together of various components in time for a completed minimal-cost, minimal-delay end product came from the space effort. IOW, an intellectual concept.
And last and most important: It's the last frontier, and it's there.
Art