I don’t use them, on purpose. I think they are a bit childish. I write out stuff. I also don’t LOL, OMG or any other stuff in real life.
There are times that I think people don’t want to talk, so they put something out there that means I’ll let you go or best wishes (read I don’t want to have to say what I really mean, like I don’t want to talk).
Sure, I get them from everyone, but I think if you are over 50, or a guy, you shouldn’t be doing this. It seems like playing with dolls, but then that is just me.