The best part of AutoCAD is being able to do practically anything without interface. You're able to run all the commands just by typing them. It's customizable, lightweight, easy to get started (with a lot of tips for beginners).
There's pretty much nothing that I don't like about AutoCAD. I think it would be better if it had integrated support for rendering software such as Vray Corona etc. That'd help architects to do better renders without having to use third party software like 3DS Max or Maya.
If you're looking for a professional software for architectural drawing, complicated modeling, AutoCAD is the best sofware out there for you. for architects it's preloaded with hatches, different furniture, trees, people, doors and windows etc. blocks that are just there for you to get started with ease. If you're a 3DS Max or Maya like software user than AutoCAD is ideal solution for you to draw buildings and other furniture with true sizes and proportions that are very hard to keep in other software.
I use AutoCAD for both architectural drafting and more complicated modeling. I almost always end up exporting it to 3DS Max or illustrator to finish up