Well, Greg...
After a very productive spree some time ago, working with CF began to feel repetitive to me and I caught myself phoning in my designs. My heart wasn't in it any more and I sensed routine take hold. Had to take a step back.
There also were some unresolvable issues or limits for me, technical and aesthetic, about planting in general and Speedtrees. Truth told, I can't stand the look and feel of anything vegetal in Unity right now, seems so phoney and utterly artificial, and I am desperately waiting for some cosmic miracle to bring about a change for the better. Fat chance, I know...
As a Mac user, I'm also increasingly fed up with the usual platform malus I seemingly must endure in play, so that I stopped playing the game altogether. Jerky spazz golf in tiny 720p format isn't my idea of worthwhile computer golf.
As CF was released publicly, many new designers joined "The Cause" and started churning out their courses. This was the perfect time for me to slip into the background and wait for the "next thing". Right now, I think it's utterly pointless (sorry, other guys) to publish any new golf course under the old Unity 5.2.3 standard. I'm waiting for Unity 5.5 with procedural grass, hoping this might rekindle my old passion. When the time is right, I absolutely intend to have another go. I have 3 courses already laid out and meshed: "Oasis Lodge", "The Peacemaker" and "The Thing". To finish them now, however, would not go beyond producing "more of the same".
And that is the true reason for my hiatus, because that I cannot bring myself to do. Nobody needs or deserves "more of the same", ever. I will rejoin the fray (or not) whenever I feel that the time is right and that there is a new dimension to CF, allowing my craft to progress. Right now is not that time. Nor will it be, I understand, for the remainder of this year.
Having nevertheless formed strong sentimental attachments to this project and its main protagonists, I keep haunting these Forums regularly, to stay informed and slowly creep towards the 4K post mark whenever a post like yours provides me with a good excuse to do so.