Wistful in Toronto.

"Toronto is a metropolitan, multicultural, dynamic city in which people are notorious for talking wistfully of living somewhere else." [source] This rings quite true for most of the people I've encountered during my years in this city. But I wonder if the city itself is the cause (e.g., Too many potholes on the street? Not enough subway lines for efficient transport? Too mush slush in winter? Not enough opportunities for creative types?), or maybe it's the culture, or as some might argue, the lack of a clear and dominant one? And is it truly a wish to live somewhere else permanently, or does Toronto simply inspire us to go out and travel the world?