I still use FB but there are a lot of things about it I HATE. I choose to sort threads by most recent, it keeps popping up most popular. FB determines what it thinks is important for me to see, so if I am friends with someone, FB may decide I don't need to see all of their posts, just some. Very annoying. And they keep trying to get more and more personal info.
I would leave it but I have several old classmates, friends, former co-workers and neighbors I stay in touch with that way. They are not necessarily gardeners, although some are, so they would not be interested in ATP. But I spend a majority of my time here because we're discussing things I am interested in and I know someone may be interested in what I am doing/saying.