In desicions such as this, i put a lot of faith in the opinions of the pilots who fly the state-of-the-art machines. It would appear that they think the F-22 is a worthy part of our defense system.
With the multitude of systems at hand, the F-22 is, IMHO, a step in the right direction, and a valuable addition to our arsenal.
Where I work, we machine many titanium parts for the F-22. Tolerances on the F-22 are tighter than the F-15 and F-18, too. This all adds to the cost besides all the data we now have save on the major fittings. I think the F-22 will be worth the cost. It will show the Chinese, Russians, French, or Indians that we mean business.
My Dad, who was a long time McDonell-Douglas manager and WW2 veteran would say "Those who control the skys will win the battle". Then he would add "Son, you don't want to be on the losing side in a war". A firm believer in peace through strength.