I'm off Facebook, which means i'm off messenger too. I've been thinking about it for quite a while now and I've now decided to leave. I've gradually been whittling down my friend list. At one point I had over 600 'friends', when I left I had 50 and I really wasn't using it in the end.
The final straw was all the recent stories in the news. I may go back in the future but it's not something I want to be associated with at the moment.
You all know how to contact me if you need to.