Mr. Boisvert is right of course. As a practical matter there is no reason that Queen Elizabeth II and her heirs should be Canada's heads of state in perpetuity. Moreover there are excellent political and symbolic reasons why a home-grown head of state- dare I say an elected one?- combined with our existing Parliamentary system is the logical choice for a mature democracy like ours.

But the matter is a deeply emotional one, albeit for a dwindling number of Canadians. To them it's like a religion, handed down from above. It's not subject to the evolution of ideas and changing times. 

It will be a while yet, perhaps another generation or two,  before Canada grows up and stands on its own. In the meantime let's take care of the monarchists as we would a beloved but dotty old grandmother. We know they can't make proper sense of things, and their memories are all of the past, but we still go along with their wish out of respect as long as there's no great harm done.