VTOL is a tremendous waste and serves no genuine purpose in fixed wing operations. It was only useful once (the Falklands) and it only succeeded because Argentinas air force was retarded in every meaningful way so RAF and RN harriers with almost zero useful ordinance and next to nothing in fuel for loiter were able to hold off an entire wing of morons trying to charge them whenever the weather was nice.
The USMC saw this and totally felt validated in trying to continue the battle of Wake Island 40 years after the point, despite the Harrier, as it stands today, being less effective than the A4Ms they replaced at CAS and force projection. The limitations VTOL puts on both weapon and fuel capacity is truly staggering, even USAF TACP boys bitch about harriers in the stack because they only get two runs, max and maybe 20 minutes in station before needing to hit the tanker. They lack the precision of the Apache and Cobra, the capacity of the A10, the speed of the Viper and at the end of the day, it takes 4 harriers to provide the capability one strike eagle brings to a mission.
And I'm saying this as someone who used to fly the damn things for a bit, the Harrier is a funding albatross and an outright gift on the tax payer