Not really a life lesson, but something I DID learn today:
The Google Chrome Reading List feature is NOT gone.
Instead, it's moved to the upper right corner, in between the Extensions button (the puzzle piece icon), and your Profile picture.
It's the Show Side Panel button - a blank rectangle with some shading on the right side.
Just click that, and you'll have the option to choose to view either your Reading List, or your regular Bookmarks.
And you can still add pages to your Reading List - you just have to click on the Show Side Panel button to open the Side Panel, and click the "Add Current Tab" button in blue lettering just above your actual Reading List.