I find the worst case scenarios come up pretty frequently. Even novice users can have a ton of photos, browser tabs, thumbnails, music, email, icons, full text

I find the worst case scenarios come up pretty frequently. Even novice users can have a ton of photos, browser tabs, thumbnails, music, email, icons, full text search, etc. Once you get used to a system that has great I/O it's hard to go back. Sure large games often have difficult I/O patterns, but it's far from the only used case.