That probably shouldn't be the case, but when it comes to politics, perception is very much reality in that people's perceptions translate directly to votes.
Still the sink cost fallacy though.
I'm sure we've all experienced situations where we realize that the work we're being paid to do is futile and will never reach achieve it's intended purpose. It's really demoralizing but the thing to remember in that situation is that you're still getting paid.
Would you rather be an aeronautical engineer who gets paid and doesn't launch of a rocket, or an aeronautical engineer who doesn't get paid and doesn't launch a rocket?
That's the spirit.
https://arstechnica.com/science/2019/06/new-report-finds-nas...
Cost overruns would have put NASA 33% over budget a few years ago, but they committed accounting fraud to cover it up.
The SLS is nothing more than a welfare check to Georgia and Florida.