If Harry hadn't estranged himself from his father and brother, his children would be able to stay with their grandfather and uncle when visiting the UK and share their security, despite Harry preferring the safety of a hotel to Buckingham Palace. Instead, his immaturity, selfishness and petulance have resulted in a deep family rift, which is unlikely to heal.
Meanwhile, he doesn't work for the British Royal Family anymore so generates no revenue or value for the UK but expects the UK taxpayer to fund his security. Most people in this country are struggling with the rising cost of living, an NHS in crisis and crumbling public services. We do not have the resources to support self-indulgent princes who don't even live here.
Harry is so focused on himself that when he couldn't have his own way, he just flounced off in a tantrum with his gormless wife, whose contribution to the world involves swanning around a Californian mansion grinning inanely, while a camera crew records her transferring stuff from one plastic bag to another. They deserve each other and we're better off without them.