I absolutely despise the following directories: Documents, Music, Pictures, Public, Templates, Videos. Why? Because applications randomly dump stuff into these directories and fill them with junk files. I don’t want any application putting anything into directories I actually use, unless I explicitly tell them to. It is not possible to keep your files organized if applications randomly dump trash files into them.
Fusion 360 used to be free for the hobbyist too. FreeCAD is GPL licensed, so it will always be free.