Sorry to bring up an old topic, but this is something I wanted to discuss since I may have started splitting occasionally.
I'll admit, I lane split when traffic is really bad, but only when it's standing still. When it starts to move, I blend back into traffic. I have seen police bikes split traffic before and they weren't in a rush to get anywhere, just moving through traffic at a pretty slow pace. Anyway, I feel it's safer to put myself between two metal boxes that are next to each other, than between a stationary metal box, and another that still needs to stop, especially in stop and go traffic, where so many NM drivers will not even look at the traffic in front of them to see where they need to stop. This is why even if I'm not splitting traffic, I stay as close to between two lanes as possible so if the idiot behind me doesn't stop, I can try and shoot in between the traffic in front of me, or at the worst, only get sideswiped instead of completely run over or crushed between two cars.