Welcome to the dark side, Hans. I did the same 4 years ago. I was vehemently against it for about 4 years before caving in. I don't participate much in astronomy groups but spend most of my time in activist/humanitarian groups.
You can probably think of it as an amalgamation of the larger American and European (and, Australian) groups in one place. We get to see lots of good stuff that we'd normally not see.
H