As far as the lane-splitting vs. passing on DY. I would choose lane-splitting.
I am sure every state has at least one city where lane-splitting would come in handy. I guess it depends on where you live. If I lived where there were a lot of twisties and not much overall traffic, well yes then pass on a DY law would be more handy, but I bet lane-splitting would benefit more people overall.
Like others have said here, California drivers are more tolerant, not just of lane-splitting but M/C's in general and more aware. That's been my experience anyway. The traffic in LA is worse than any place I have been if you are in a Car. I am not sure why anybody would want to commute in LA in a car, you think they would have 90% of the population on bikes. Yes they have more than other states, but still far more cars than bikes. I just don't get it.