The airplane could leap tall buildings in a single bound, but it's useless if they refuse to expose it to a combat environment.
By that standard, every nuclear-armed aircraft ever built, and all of the ICBMs ever built, are "useless". Ridiculous.
But that's not even the point. Since the Raptor has become IOC, there hasn't yet been a conflict where there has been an air threat, and hence there hasn't been a reason to employ it. It has nothing to do with "refusing to expose it to a combat environment." Use a hammer to pound a nail and a screwdriver to install a screw.
Additionally, the only REAL airborne threat we will ever face comes not from ANY gray state, or even most red states. Technologically, China or Russia can't go toe to toe with us. It's a perfect example of corporate technology being used to maintain a baseline level. Other than that, complete waste of taxpayer dollars.
So....based on your crystal ball, what "REAL airborne threat" will the US "ever face"? I mean, since you seem to have some miracle wisdom about that, I'm sure there are lots of man hours and money to be saved in
not training to fight Flankers and wade into IADS of double-digit SAMs.
The point isn't if anyone in the world can match Raptor -- clearly they can't. The point IS if anyone in the world can match the aircraft it's
replacing, and there are numerous air-to-air and surface-to-air threats that are widely fielded that will absolutely make mincemeat out of Vipers and Eagles. That's true today, and of much greater importance is that it will especially be true in years to come.
Let's not forget the lead time required to design, build, test, and field an operational combat aircraft. The Raptor took more than 15 years to go from paper to operational status. It's not like we can whip up a new batch of capable airplanes in a few weeks once a threat starts showing itself. The Viper and Eagle are OLD designs. It's like the Wright Flyer was sitting on the ramp at Wheeler Field the morning of 7 December 1941 instead of P-40s.
All of this is a moot point, anyway. Raptor is here in operational service...it is phenomenally capable...and they'll do whatever they need to in order for it to be healthy for decades to come. God only knows there's no replacement for it coming anytime soon, either.