It is easy to use, intuitively understand what it does; I can create my own templates or import existing ones from other programs like AutoCAD/DraftSight etc.; Can save as DWG file format (which works great when creating BIM models); Easy export for different formats such CAD files (.dwg).
There are some useful features that you cannot find in all similar tools - e g., importing image into model which would be very helpful if working remotely without using any external applications / images…