Tracey Island,
If we accept your history lesson without question, it's apparent that we needed carriers only twice in the last 50 years, and only once since 1982.
Unfortunately Op Palliser repressents a poor example, as Biggus and Sir Percy imply. A carrier was used, of course, but it wasn't needed, and if it proves anything, it proves that helicopter carriers are useful.
Carriers are a useful 'nice to have' capability, but not an essential one. Like the ability to airdrop large formations. This is a capability you'd choose to have if you had unlimited resources, but in today's financial climate it's one you'd reluctantly leave to allies, concentrating your money on the capabilities that are needed every time you go on ops, and which make you a more useful coalition partner (tankers, SEAD, recce).
There's a lot of bollocks being talked about marinising Typhoon. The issue of the view over the nose could be solved in a number of ways, but it is an issue if you want to absolutely minimise structural alterations (eg avoid a split rudder, or a raised seat and slightly bulged canopy, or a redesigned undercarriage and/or thrust vectoring). None of this is rocket science.
The study conccluded that "Navalising appears 'practical and relatively inexpensive" and that there would be a +340 kg weight penalty for a STOBAR version (Ski-jump) and of +460 kg for a Catapult launched version.