There are several very good reasons to make space in your quiver for one more arrow...a judo tipped arrow.
Reasons I carry one...
I like to use it as a rake for quieting my final approach to my tree. Raking away some of the crunchy leaves and twigs allows a less threatening sound to nearby game. Make an occasional turkey yelp when you rake. Yes you still make noise, but it isn't the typical sound of a sneaking human. Its amazing how much less " heavy" you sound when you thin-out the top layer of dry leaves. You end up sounding more like a squirrel than a 200 pound, 2 footed predator.
There are times that there is just nowhere to place your foot without stepping into a tangle of sticks. We all know that snapping twigs while trying to sneak is a no no. Pull out your judo and quietly rake a spot to step. And each time I improve my approach, everytime after that gets quieter and faster.
Barry Wensel advocates clearing foot placement for pre prepping stands. I've done that, but one wind storm can undo most of that work. A judo will help you keep foot spots cleaner.
Some guys use a stick for the same purpose, but what do you do with the stick when you get to the tree? I don't want to leave it down on the ground for a possible odor bust. My judo arrow goes back in my quiver. I always have it. No need to look for a stick.
Judo are nice for pushing obstructions aside. I really try to not touch or brush against stuff near my stand. It leaves odor.
Sometimes I like to stump shoot a few arrows well before my final approach. I occasionally take a few 1 yard shots in the truck headlights before I head to the stand. Judos are the best for roam shooting.
Sometimes before I climb down, I will shoot an arrow at a leaf or whatever. I usually shoot towards my exit trail since I have to walk in that direction anyway.
For you guys that shoot sights...
If you've ever bumped them or had a reason to question if the pin has moved, a judo can be shot to double check if the pin is still on target. No way I want to use an expensive broadhead for a test shot.
I agree that I'm out there to shoot deer, not squirrels or other small game. Judos are great small game heads but I very seldom screw around risking disturbance taking shots at non deer animals around my tree. Be very selective about how/when you use a judo.
I shoot a very (physically) light recurve. I like to have a little extra weight on my bow. A full quiver makes the bow feel a little more stable to me.
So, how many arrows should a guy carry? "X" plus one and the one should be a judo.