People have been saying the demise of the carrier is upon us for 5 decades. Yet nothing offers the flexibility and power projection capabilities of a CVBG. And guess what submariners call "heavily armored battleships?" Targets...
And if you think CVNs are expensive, you should research how much retrofitting an Iowa Class with a STOVL flight deck would cost. And then factor in manning costs for a ship that needs close to 5000 sailors.