Andrew Coyne takes a page from The Monarchist and declares we should do our duty For King and Country. In a similar heartfelt vein, he also lays out his rationale for why we should dispense with dual citizenship and be forced to choose (renounce or pronounce) our loyalty to Canada. I agree with him with one important caveat: that we should also continue to recognize our fraternal loyalty to our collective Queen who is sovereign of 16 other nations, by reaffirming our status as Commonwealth citizens.
The 1977 Immigration Act already does this, when it renounced our status as British subjects, and that should continue. There is nothing inconsistent with that particular duality, since there is also the constitutional reality of our familial allegiance to the British Crown as recognized in the Statute of Westminster, which is more than a UK statute, but a treaty that we signed in 1931.
But then again, what's the point. If our status as Commonwealth citizens no longer confers any special advantages or obligations to one another in the larger context, then the gig is up. Read David Cameron: Conservatives commit to cut non-EU immigration. The Commonwealth is dead, long live the EU.