NASA manned spaceflight has been almost exclusively an unmitigated boondoggle from the time of the end of the Apollo program to today. The Shuttle program was a bill of goods that never lived up to any of the claims it was sold on. Not only was it one of the most dangerous orbital launch systems in history it was far and away the most expensive heavily used launch vehicle in history. It came very close to dooming all spaceflight, manned and unmanned, in the US on at least three separate occasions. But the one thing it did better than ever was funnel billions of dollars a year to high paying aerospace jobs in key congressional districts.
And now we have the so-called Space Launch System. Another boondoggle jobs program that is so ridiculous that fundamentals of its design have been specified by the Senate itself. The Planetary Society, Space Access Society, and the Space Frontier Foundation have all called for the SLS to be cancelled. It's a poorly designed rocket, a huge waste of money, and overall a project that is not likely to succeed.
I love space exploration. I love rocket engineers. But I cannot abide either being abused to serve as pawns in congressional pork-barrel spending games.
This is not a question about what NASA manned spaceflight "needs", it's a question about where the Senate wants to funnel money.
NASA manned spaceflight has spent a quarter of a trillion dollars over the last 4 decades.
A quarter of a trillion dollars.
That is the cost of the Shuttle legacy and the ISS. Does anyone think that we, the American taxpayers, actually got a pretty good return on that money? Before you answer keep in mind that we could have easily paid for 150+ Saturn V rockets as well as the appropriate payloads and spacecraft for them for less money.
Meanwhile, companies like SpaceX have managed to build entire orbital launchers from scratch for less than the cost of a single Shuttle flight.
None of the alternative uses for that money are as important? How about using that $10 billion a year to buy commercial flights on Boeing, LockMart, or SpaceX rockets? Right now only a fraction of NASA's funding is actually serving the purpose of advancing the state of the art or improving access to space.
There is an argument about whether the amount of money governments spend on various activities could be better spent on spaceflight.
This is not that argument and has no bearing here. This is an argument about whether NASA is a good conduit for spending money on manned spaceflight activities. And there is overwhelming evidence that despite a handful of successes it has not been. Over time it has gotten less efficient, less safety conscious, and less capable. There is every indication that with Apollo era budgets in place the NASA of today would not be able to get back to the Moon in 10 years or even 20 years.
The unmanned spaceflight portion of NASA still does some pretty good work, but the manned spaceflight portion has become a bureaucratic infused pork-barrel shell of its former glory. There are lots of reasons for that, a lot of them due to consistent political meddling from without, but it's still the truth.