Civil 3D is a necessary monster. It is the best tool on the market for the specific job it does, but it demands respect. The download is heavy, the setup is tedious, and the interface is intimidating. However, once you master the "Dynamic Model" concept—where changing one thing updates everything else—you will never want to go back to drafting lines manually.
A standard Civil 3D download provides the core modeling engine, but infrastructure design requires localized tools and regional standards. Country Kits
The biggest pain point isn't the download; it's the account management. Autodesk has moved aggressively to "Named User" licensing. You must log in to verify your subscription. If your internet cuts out, or if your company’s IT admin hasn't assigned you a seat properly, the software will refuse to open. The days of a simple serial number are long gone.