[WRhine]

Maybe he doesn't care if he kills, just likes to shoot people.

Well, his kill ratio suggests that he goes for the kill but yes, an actual kill may be less important to him than other motivations like injecting terror into the community and confounding the police.

[stuartcr]

All his shots have been torso, biggest target. If he's not a trained sniper, just a crazy, maybe he just wants to make sure he hits someone.