I would describe myself as a practical royalist. If I were writing a constitution from scratch I'd never have an undemocratically elected head of state. But, what we have works. Id rather have the queen any day over another politician. I'm British I can understand other nations having differing pov.

I don't know how Canada does it but in the UK the prime minister is chosen by the party. You don't vote directly for them. As such it isn't a democratically elected position so it isn't really any better than the status quo.