I don't want to address the issue of whether or not Adobe should or should not still be supporting a program that was killed long ago. Obviously if GoLive has still been serving your needs, then it's understandable that you are upset to have the rug pulled out from under you.
Many of us here were once GoLive users. Personally, I was thrilled when Adobe purchased DreamWeaver and stopped offering GoLive. It was not easy switching from the GoLive environment to the DreamWeaver environment, but it made sense to me so the effort was worth it.
Technologies, methods, and design practices change on the internet rapidly, as you know. I think you should take this as an opportunity to stay abreast with trends and migrate to a more contemporary toolset. Your web presence will be better for it.