My point was that the law is written the way it is because putting a bullet into someone else's body -- even if it is "just" their knee! -- is very likely to kill them or to cripple them for life. If you aren't willing to accept that possibility, you should not be carrying a gun.
This doesn't say anything about whether or not the person's death is a desirable outcome, or whether the shooter really wanted him to die. It simply recognizes that death is in fact a very likely possibility whenever you pull the trigger... no matter where you aim to hit.
Killing someone is tough. It changes you. This is particularly and most heart-breakingly true for people who did not count the cost in advance.
If you're not willing to accept the possibility of killing another human being when you launch that bullet, you should not carry a gun at all. If you carry it, you may be tempted to use it. If you use it, you may kill someone. And this is true no matter what part of their body you aim at.
My personal website: Cornered Cat