Tiling window managers are a different way of thinking about how one uses a computer, similar to how different touch interfaces are, but in the other more keyboardly direction.

I find I reach for a tiling WM (or tmux) when I have a lot of terminal tasks I need to do and being able to quickly summon, dismiss and rearrange windows visibly is more important than their placement.

As with everything else, everyone has their preferences and each paradigm has its strengths, weaknesses and natural use cases.