You drive with the expectation that someone will be going the wrong way?

Well if you're hit while lane splitting, it's because someone didn't indicate or look

And if you are hit while driving the wrong way, is it also because someone wasn’t looking? The lane splitter did something they knew was illegal (in the jurisdiction in question), why should I be on the lookout for illegal behavior?

From even a practical standpoint, if I’m on a motorcycle, I know that I’m at an increase risk of injury. Why wouldn’t I be more careful?