It's already happening....just heard a discussion about the viability of a plan to construct condos in Los Angeles that are 250 square feet...size of your average garage...
The day is coming when people who live in single family homes will be seen as selfish and greedy for living so inefficiently.
Then, as has happened with cigarettes, high taxes will be placed upon single family homes in the hopes of dicouraging such a wasteful lifestyle.
We will be forced to live in cities that will be much more efficient in their use of resoucres.
And cities, by their crowding and sharing, breed liberal thinking.
That is why urban areas vote democrat--and they will, as I mentioned above, vote to discourage and tax single family homeowners.
Mark my words.
BTW, for some time now homeowners in parts of the USA can no longer use their fireplaces because of pollution from too many homes (really, too many people) in those areas.