Ethical Wills. Do I need one?

This TIME Magazine article tells us... 

“Where a legal will transfers assets, an ethical will transfers immaterial things: your life lessons and values. The practice dates back over 3,500 years to Jacob, who orally delivered the first one to his sons, according to the Old Testament, admonishing their bad behavior and giving tips on how to do better. 
An ethical will is a complement to your will, not a replacement. “I like to say it’s your values alongside your valuables,” . It can act as the explainer for why you made certain choices in your legal will. 
Creating an ethical will for your When I Die file doesn’t have to be a big deal. It can consist of things you’re already doing—collecting quotes you like, or journal entries.”