>>19376
As with most hardware, the answer to that depends on how good a fit it is for what you're trying to accomplish. They're overbuilt for the STOVL carriers they ended up being, but they're also too small for sustained overseas operations like the Nimitz or Ford classes are for.
On the other hand, if you maintain a relatively small military and you only get one (well, two, but they're supposed to rotate in service with each other) they're probably the best compromise you can get. They're small enough for littoral work but big enough for bluewater, they can launch long range strike aircraft or ASW sorties, and carry 250 marines across the Atlantic with only a bit of DD/DDG support. If you're not going to run dedicated AAS hulls like the US marines or China, you're better off with the all-in-one solution even if it's not as capable as giant CATOBAR carrier and a group of support ships.