My first experience with 3D was with AutoCAD 10 or 11 when they had "2 1/2"D. I've used ProE, Catia, Unigraphics, SolidEdge, Solidworks, Inventor, etc.

The workflows in FreeCAD are completely irregular and alien compared to those others. It's incredibly frustrating to use and I have had zero luck becoming fluent in it.