Why not install just the Messenger app? I never install Facebook app, but I keep Messenger app to chat with my college peeps.

I'm a computer user. When I'm on a computer for work, or for fun, I prefer to be on my computer, and not stop and reach for a phone. I often have my phone in another room entirely. (On my main gaming PC, I use phone link to get texts on my computer as well!)

I also vastly prefer typing to the horrible swiping keyboard my phone uses. So for communicating via text, a computer is a much nicer solution, in my opinion.

But that doesn't work for desktop (they already killed the messenger desktop app)