My niece is an MBA. Very hard-working, brilliant, dedicated and successful girl in her mid 20s. My nephew is 30 plus, also a very successful guy who has the power to decide if folks get a house loan or not. Yet none of them have any idea of how a directory works. Their iPhones just fill up and get slower, and none of them have any idea of why that happens, so they need a new one. There is a technological age gap here, admit it or not.
The SL inventory seems to be mostly for our oldbies who know how to use folders, at least on a basic level. The first thing I do whenever I get a new Android phone is to get some sort of file manager installed. That seems foreign to so many. No worder why SL has retention problems.