DOS used to limit you to something like 100 items in the root directory (C: etc.) so collecting stuff together was a good idea (just a pity no one did it before Win 95). Personally I like having a folder for apps, a folder for docs and a folder for the OS: I just wish Poser could look for its stuff in My DocumentsSomething-or-other as well as Runtime so that I didn't have to keep some of my data in Program files.