Installing ArcGIS for Server and ArcGIS Desktop is still a nightmare. Pro is a simple click to update and a few minutes later its done. Desktop is better than it used to be. At least I don't have to uninstall the old version. Enterprise,....well that process is nuts. I went to install the new web adaptor only for it to tell me I had to uninstall the previous version first. Why can't that be built in to the process? Please consider making the upgrade of Enterprise more streamlined. Allow us to check options, yes, but seriously, it shouldn't take an hour and multiple steps to upgrade ArcGIS for Server.