Thing is, you might hate the Royals, but if they weren't there then that almight fuck-up that is Boris Johnson would be the head of state.
No, he wouldn't! He's the prime minister, for heaven's sake an entirely different job. If you abolished the monarchy, you would be free to devise the criteria and powers of a democratically-elected head of state to provide for largely ceremonial powers and minimal political ones and if, as in Ireland, the presidential salary can't go above the top civil servant rate, you've already blocked out any career politicians, who simply aren't interested because it has no political clout or cash attached. The prime minister would have no more to do with an elected HoS than he/she does with the queen.
People continually behave as though the monarchy is the only thing holding off the prospect of President Johnson/Blair/Farage, when it really isn't.
I can imagine David Dimbleby intoning 'and here.comes the bride' wearing a dress made by X being accompanied by her father, the sex offender and all round scumbag HRH Prince Andrew
But I think it would be improved if the dress were sewn out of mailbags by HRH Air Miles, now resident at HMP RandomPrison, and he accompanied her down the aisle wearing one of those electronic tagging ankle bracelets. 