I cut all my arrows one inch longer than my draw, plus point, and tune with point, adaptor and insert weight and or side plate adjustments.
I like my arrows to be no longer than they have to be for a number of reasons. One, with my arrows in a bow quiver, the nocks don't stick into the dirt when I lean my bow against a tree. Two, it takes less movement removing an arrow from the bow quiver and putting it on the string. Three, since the arrows are shorter, the arch they make when the bow is moved is smaller, i.e., just less movement for critters to pick up on. Four. I'd rather have the extra weight up front with heavier point weight for more FOC vis-a-vis greater weight due to a longer shaft. Five, longer shaft length itself reduces FOC. Not talking big differences here, but every little bit counts. If I thought on it a bit, could probably come up with a few more reasons.
On the other hand, if I were a gap shooter, I'd want my arrows to be as long as possible. Lots of reasons to do either and either works.