Given that this is the urban Toronto forum, I thought that I'd be given a harder time with my comments. I'm very surprised to see that so many members, if not the majority, feel that the negative aspects of living downtown are strong enough that they choose not to live there.
It seems like most of us live in urban/suburban transition zones like midtown, Bloor West, Parkdale, or the Beaches. They are fairly dense, transit oriented, and pedestrian friendly, but they are also green, quiet, and spacious. By land area, those areas are 75% detached housing. Yet at the same time, high rises are well enough placed that most people still actually live in apartments.
If one could argue that we are more enlightened than the average person when it comes to city planning, I think that this thread sends a very strong message to city planners in terms of how the GTA could develop sustainably.