For me, short of apocalypse, I could hold all of my properties indefinitely if I lost all income from the properties because my total number of income streams and diversity of streams can absorb the costs of the properties and my living expenses.

California and the nation as a whole are very diverse areas of thought and lifestyle.

Not much diversity if I'm banking on the future performance of that company for both my investments and my paycheck.

The point of my wish when i started was to be more diverse when I started. 

For the cities we were interested in, how was their population growth, how is their local economy performing, do they have a diverse employer base, have median income and home values risen over time, what are the crime levels, etc. from there determine which criteria mean the most to you (some cities will perform better in specific data points).

That means markets with solid population growth, job growth, modern/diverse economies and industries.

Quaility of living is high, cost is low and we have a very diverse economy that is humming nicely at an unempyment rate that is so low that businesses are recruiting across the state border. 

University towns - Cities with large and diverse student populations offer landlords a stable, predictable tenant pool throughout the academic year.4.

There are a lot of good cash flow markets but what I like about Indy and KC is they both have growing populations, growing jobs and diverse, modern economies.

The rental market is robust, thanks to a diverse economy and a steady influx of young professionals.