I use Facebook from the browser on a computer for better privacy (block ads, tracking cookies) and for a much better experience. There are many things that any browser enables by virtue of just being a browser that the app does not support (just two examples for now - copying a permalink to a post or comment in order to refer to it elsewhere, and Find in Page to look for specific text on the page). Additionally, the what Facebook displays and how it displays things vary a lot when comparing a desktop browser interface and the app.
The distraction issue is why I uninstalled it. I find myself having to "request desktop" version when I want to read messages on my phone rather than install the messenger app.