It simply wasn't built to be used as a dedicated 3D model creation tool. While 3D model creation is a possibility, its limitations quickly become apparent and, in some cases, frustrating. Undoubtedly, AutoCAD works best when creating detailed and accurate 2D models. However, if you're looking for something that'll allow you to create complex 3D models, then you may be disappointed. If you're looking for CAD software that provides 2D & 3D creation opportunities, then look no further. If you're looking for CAD software that enables you to focus solely on engineering or construction, you'll gain significant use from AutoCAD. Users can use many specialized toolsets and complementary programs that focus on specific disciplines rather than doubling down on complete coverage. Where AutoCAD lacks in complexity, it makes up for it with versatility.
However, more experienced users might find AutoCAD lacking in extensive use and be less viable as an option for larger, more complex projects. AutoCAD provides excellent functionality for users looking to experience CAD software and begin learning its implementation.