The last part of your statement is true; the first is questionable. While the Soviet Union may no longer exist as a threat, those same bombers and standoff cruise missiles (i.e., AS-4, AS-6, etc) are owned by the communist chinese, and still pose a threat to our carrier groups deployed in westpac, one that AMRAAM equipped F/A-18s are ill-suited to nullify.
Our carrier groups look impressive these days, but the next war will show them to be paper tigers because of insufficent emphasis on the outer air zone (not to mention insufficent ASW, although fortunately the Chinese submarine fleet is still below-par).