shrug I've heard this argument many times, but this is clearly a different strokes situation.

I set my window layout up once at the start of a multi-hour working session. Most of the time, that's either 1) a large MacVim window and a terminal or 2) that plus a browser. It takes ~10 seconds to get it how I like it. After that, cmd+tab works just fine.

Even on my 27" display, I usually prefer to have a little overlap where all three windows rest in such a way as to permit the most relevant bits to be visible simultaneously, while allowing for overall larger space when an individual app is focused. Tiling window managers tend to distort windows to less than ideal proportions, as they strictly eliminate overlap. That said, I utilize splits (ie tiling) within vim to great extent.