[Canada]

> For all intents and purposes it's a tax

Yes, you're right. The rate is fixed, not based on individual risk. Really, it's no different than Employment Insurance, which is also more of a tax than an insurance.

> Are you suggesting that Canadians are ignorant of other countries health care systems?

I'm suggesting that the vast majority of Canadians, myself included until relatively recently, are almost completely unaware of affordable options available world wide. (Other than in the US, which isn't affordable at all)