The strong dollar certainly hurts a lot of companies and negatively affects the numbers they report.  This is only one issue.  At present, I think the Fed easing is at the top of the list along with the tariffs and China's growth slowing following closely behind.  There are a lot of headwinds out there for a market that ran a long way over the past 9 years.

My view is it was credit induced so it doesn't really matter.  Once the easy money goes away, so will the "wealth effect".