Drop down menu and other navigation mistakes

I would be interested in the communities thoughts on the benefits or lack thereof...of drop down menus.  After reading the following articles it certainly brings into question the value of a feature many of us have been asking for years.  So the question is...now that we have it...do we really want it?

The full artical can be view at  https://blog.kissmetrics.com/common-website-navigation-mistakes/

The segment on Drop Down Menues: