But it's only half a heart off!

...Huh, true. His experience is limited to Bil, John, and the scientists who keep abusing him and his friends, so that might be an interesting avenue to discover. /ponders

And really, it'd do better for his mental state than all-out battle. He's... got issues with killing people? I mean, it'd probably be unavoidable at some point, but until now, the only people he's killed were Ganondorf (well, sort of) and Yuber. Because that went so well.