As someone who wants to protect the environment, I hate the fact that the Crown Estates, which pays for the whole thing, is destroying marine environments and causing erosion by the dredging for aggregate extraction. What they do is sort huge amounts the sand and gravel each day, put it onto huge ships and sell it to other countries who have decided that they don't want to damage their own coastlines. We dig up far more aggregate than we need for own needs. They are literally selling off Britain, ship load by ship load in the name of her majesty.
As someone who believes in equality, I believe that it is a bad thing that every British child is taught they cannot get to the top of society because they have not been born to the right family. I hate that the monarchy supports the class system and helps it to cling to life with all the pernicious effects it has on people.
Sometimes people (often foreigners) say that without Britain would not be Britain without the monarchy. Ignoring for a moment that 'Britain' itself is a slightly difficult term, one is primarily English, Scottish, Welsh or Irish. It would be a different Britain but still be Britain. As John Major once said:
"Fifty years on from now, Britain will still be the country of long shadows on county grounds, warm beer, invincible green suburbs, dog lovers and old maids bicycling to Holy Communion through the morning mist."
This will still be true without the monarchy. There is a good chance that some of the cricketers will be Muslims and the old lady coming back from church will go home and eat curry for Sunday lunch. We don't need the monarchy in modern Britain, the Island will not sink into the see if we don't have one, indeed it is more likely to sink with the Queen flogging off all the sand.
"There will always be an England and England shall be free". For this freedom we don't need the monarchy. On the contrary, out freedoms in Britain have come from opposing and restricting the monarchy, our first 'constitution' was to restrict the domination of the bad King John:
"No free man shall be seized or imprisoned, or stripped of his rights or possessions, or outlawed or exiled, or deprived of his standing in any other way, nor will we proceed with force against him, or send others to do so, except by the lawful judgment of his equals or by the law of the land. To no one will we sell, to no one deny or delay right or justice."
It is our freedoms that are enshrined in our culture and history which make Britain, not the monarchy.