"I cant find how to change my settings". Ok, is under "MY ACCOUNT", and "SETTINGS", but, as is a interactive menu, some people (a lot) just cant click on it. Some markets have more users like this than others. So, sometimes having JS or not is NOT the problem, but the freedom of "tricky" interaction we, or the client want.
Ok, some people in my case complain about some "usability" simplicity, as the design looks too simple showing almost every link on a menu... but I reduced A LOT the number of emails asking "where is..." "how can I..."
Some ajax apps are a pain.... on the back button of the browser... and showing always the same page with changing content...