Both. I think we'll see less rural living and more sub-cities, more tier 2 and 3 cities.

Every technological trend I can terminate suggests more rural living:

• I believe the future of most non-computer work is telecommuting via humanoid drones. I believe job simulators are showing us what people want - remote gigs without commitment or consequences where they can be replaced and give up at anytime.
• When I vacationed an hour outside of austin recently, I began considered moving there under the condition that I could commute via self-driving.

But because we aren't forming families, I think we're all deeply lonely and will continue to colocate instinctually. Not for work, but for play.