Canada's a rough place climate wise, can't debate that. Just because you are strong willed / tough enough to brave the -30s (F or C) doesn't mean most of the global population is able to. Although there are plenty of historical/political reasons why Canada's population for its country size isn't very high... just look along a map of population density and almost all of it is weighted towards the southern border. Simple reason:
cold.
So, I wouldn't call it a "BC Bubble" or a "disease that afflicts people" because that's doing a real issue a bit of a disservice. A lot of people don't like dealing with the weather of the Prairies and that's perfectly fine. As well (to play the moderating side here), there is no reason for anyone to call any place a frozen wasteland - if it's a population center of hundreds of thousands of people who call it home there is a reason why.
I lived in Calgary for two years and people there had trouble understanding why I hated the weather so much. Great people, awesome upcoming food scene, lots of things to do and finally a planning committee that is starting to get more progressive. I could live there... if the winters weren't so brutal. I absolutely hated it - roads and streets were always dirty, running from car to home was like a marathon, nosehairs turning into frozen tendrils, antifreeze hardly working, remote starters and car plugs a near necessity (God forbid you had to take public transit if you didn't live on a C-train line, their bus stops aren't even heated... you could
die). Yeah, not for me, and it doesn't make me or anyone else that hates it any less "tough" or worthy of ridicule. Half the people would probably die of heat stroke in Indonesia whereas I'd fit right at home without A/C! Coupled with the oil crisis there was no reason to stay there when I had the option of moving back into BC.
Anyway, point being... discussing the weather is very valid and a real issue, and we shouldn't be booted out of the country just because we prefer warmer climes but have our families/credentials/sense of belonging in Canada
With that, my bias is obvious (I've actually lived in all four of these places, so I can say I've never moved anywhere I hated to be in):
1. Victoria. Mildest and overall warmest climate, beautiful scenery, great outdoor activities. Just too quiet.
2. Vancouver. Rainy, damp, sometimes cold, but in 2015 it can be considered a true metropolitan global city worthy of world recognition.
3. Calgary. Like above, this place has all the charm of a smaller city but with many of the amenities, shopping and dining of a larger one. Loved living here...in the spring and summer. Brutally cold winters.
4. Kelowna. Quiet rich retirement place with a homogenous population. Beautiful scenery though and the third largest metropolitan area for those who need the "BC Bubble" climate to survive i.e. me and Bcasey25raptor.