For me it was the better handling of multiple displays. With a tiling window manager (in my case, i3), windows expand or contract nicely when I dock my laptop and they move to the two displays on my desk. With a regular window manager I was always wasting time moving them from one display to another or resizing them.
I believe that being keyboard centric also made a big difference. I still use the mouse some but I mostly use the keyboard to move around workspaces and windows and the tiling window manager is very amenable to that workflow.
When using OSX, I haven't been very happy with the tiling solutions available. They all frustrate me in one way or another. And, in terms of the way my desktop looks, I'm okay with it being... well, maybe not the most aesthetically pleasing desktop around.
I believe that being keyboard centric also made a big difference. I still use the mouse some but I mostly use the keyboard to move around workspaces and windows and the tiling window manager is very amenable to that workflow.
When using OSX, I haven't been very happy with the tiling solutions available. They all frustrate me in one way or another. And, in terms of the way my desktop looks, I'm okay with it being... well, maybe not the most aesthetically pleasing desktop around.