Yep, they should go.
Lots of people that say they should go point out the money they cost. People counter this by pointing out the money they bring to the economy.
But for me money is irrelevent here. The amounts involved make no difference to peoples lives. Sure, if the were costing every tax payer several hundred pounds a year, or bringing in billions to the economy then money would be relevent. But they don't.

For me, its simply a matter of being morally opposed to being the 'subject' of anybody. Id prefer to be a 'citizen' thanks.
Also, i hate the class system. For me the are the living embodiment of inequality and injustice. We will not be living in a truly 'classless' nation whilst they sit in their palaces, being served by 100s of people, simply due to their 'birth right'.
Basically, i hate the monster that is the class system. They represent the head of that monster.