Most of the comments here say they only use the FB app for messaging, and they won't install another app. Why is this Messenger app the 'another' one, when the main app clearly doesn't fit your usual use case? I've kept the main app off my phone for well over a year now, and only looked back when Paper came out. Try just having the Messenger app on your phone, no news feed, no ads, no crap. Just messaging, which works incredibly well on a phone that you're already using for lots of messaging.