Want to use? What do you mean? The military usually wants to use the best of what's available! Rather, politicans of often want what they want for whatever reason it suits them.
I don't see it as a bad thing, since army should be under the political command lest they've been give too much power. I don't see whats so controversial about it?
Why do we have that foolish F-22 instead of the YF-23? A fully developed F-23 would have been far better for a good list of reasons I will be happy to heap upon your head should you be curious! High-end generals often are no better than politicians either; that's the only reasonable part fo the want to use argument you've got! 
Armies are not independent entries? They often propose stuff that suits
their needs quite well but don't actually suit the needs of the nation? You know, the meat of my argument?
The P-47 was good at a lot of things, including escort. The Merlin Mustang was better in the escort role. That in no sense makes the Thunderbolt a fluke. If you think it does, than you aren't too familiar with the exploits of the fighter in the field.
I have never argued that, if you think so please go ahead and point where I did. I dare you.
And what do you mean by "Crusader"? Not the F-8 I hope, because that was an exceptional aeroplane by all accounts.
...
No, I did not mean that. I was referring to SPA platform that was put forward during the later stages of Cold War, then cancelled. The platform the Army was so defiant to defend when there was
absolutely no reason to replace perfectly working platform with much more expensive platform.
Perhaps this only shows that history is as accurate as according to the writer's vendettas. If that's the case for everything we're probably about as brainwashed as the North Koreans...
-Thaeris
edit2: removed some offensive language
edit: The technical expertise NGTM-1R shows in the thread is still sidestepping the issue: why was the Air Force so adversely reacting to P-51, which showed itself to be well suited for the task the politicans wanted, and instead proposed an airplane that, even according to sources at the time, was good for many tasks but not as well suited for the task
proposed as an another, already existing, airplane?
The reason, of course, being armies trying to glorfy themselves and selecting tools that work for selected duties (duties that fit the ambitions of the army): an all-out air superiority platform is not what a nation needs, it's actually detrimental to the nation itself. It's not like this is an unique concept.