The problem with SL is that it is very difficult for players to learn. Something like building an avatar has so many pitfalls along the way:
Explaining to someone how rigged mesh needs certain body types.
Learning that to edit a color on an item, you may have to click "Select Face"
Explaining that pressing "Save Outfit" twice doesn't save two copies of the outfit, it just saves the links.
Understanding that if you mess with a no copy item and break it, you don't get a new one.