I am always creating content on one half of my screen and browsing through documentation or specifications or chat logs on the other half. So it makes sense, and saves me lots of time, if I setup my computer to automatically place certain windows such that they fill the whole left of the screen and other windows so they fill the whole right of the screen. And this is precisely what tiling window managers are designed to do – especially ones that let you define your own rules about what windows go where.
Xfce has been my go-to for over a decade. It is one of those pieces of software that is so stable and reliable that I genuinely forget it exists most of the time, I take it for granted. That is a property of a quality piece of software.