It depends...
My M7 in .358 is a dedicated, purpose-built rifle. It is zeroed at 100 yards. It would SUCK to zero that one 3.5" high at 100- for what I use it for.
My rifles with BDC reticles are zeroed such that the reticle works right. This is a nominal 200-yard zero, but it doesn't always work out exactly that way.
My rifles with turrets are zeroed at 100 yards for simplicity in terms of what my reference hash mark zeroes at. However, it's simple to click them up to a 200-yard zero in the field and I typically do just that.
Many ways to skin this particular cat...
