The rental vacancy rate continues to plummet year over year.

Without the ability to stay on top of bills, my credit plummeted.

Control.I can't control whether or not the CEO decides to sleep with his secretary and the stock price plummets. 

At the height of the market, my brother bought a house in Taftville for about $250,000, and the ONLY reason he hasn't left Connecticut yet is that the value of his home has plummeted to around  $150,000, and he can't sell it without losing a LOT of money.

You don't want to opt for a 7 year PPP then have rates plummet in 3 years.  

Back in 2008, after watching my stock portfolio plummet and lose a large portion of value (none of the money managers predicted the collapse, even though nonprofessional friends of mine did) I decided to diversify and take the responsibility for my future.

Think of Bitcoin and other Crypto crashing to $0, stock market declining 20%+, Tesla filing for bankruptcy, eviction and foreclosure moratorium expiring, oil at $150/barrel, Fed raising rates to combat hyperinflation, interest rates on 10 year treasuries going to 3%+, China invading Taiwan, and more civil unrest in USA all happen before the end of the year....Austin market and every other real estate market will plummet quick. 

@Paul LiuBack in the 2008 crash, values of homes plummeted and mortgages were difficult to get.

I've heard some say that cash flow isn't that important if you intend to buy and hold because of appreciation but as you pointed out, what if there's an economic downturn that causes the market to plummet.

If you are using personal credit cards, doesn't your credit score plummet?