I'm another "not trying to be a rebel, but...." crowd. I feel more in control without it. Having work bind on the splitter can lead to more dangerous situations than not using one. And like Rocker, I prefer to have a clear sight of what is happening before, and after the cut. If the tension release caused by the cut is resulting in a distorsion that is closing the kerf, I want to know about it, particularly before I get any resaw damage.
Case in point. I currently have 2 blackened nails, and 9 different cuts/abrasions on my hand from a monumental kickback last weekend. I was quite prepared to admit any number of broken bones in the hand - the pain was exquisite. quite a bit of claret was being wasted as well. So, before any go "ha - serves you right", it was one of those rare occasions I thought "I'll be good, and use the guard/riving knife" I didn't see what went wrong- the guard blocked my sight. What I can conclude, is the work for some reason, did get caught by the back of the blade when the cut was almost completely through, and it kicked back. Hard. The splitter did not stop it. The guard was not able to contain it. Both were apparently shoved out of the way by the force.
Once back out in the shed, after quite an extensive patch job on myself, off came the guard, and I tried again, this time with the Grr-ripper. Ah. Control.
As above, I'm not trying to convince anyone that my way is better, or worse. It works for me, and I am happy that I have more control, and am safe.