“When are we going to use this in our everyday life?” (2017)
I was at a talk featuring Richard Thaler a few years ago, and someone in the audience asked a question in a vein that runs through the comments here -- 'is it better to teach high school students stats or calc'?Thaler's response: I don't think it matters as people will forget either.  For example, by show of hands, who here remembers anything of substance from their highschool chemistry class?I was mortified that only I and ~5 others raised their hands out of a very large group.  (I picked up the ideal gas law and dimensional analysis from said chemistry class and have found the latter to be quite useful.)