User blog comment:Zeowolf0/Wolf's Rant - Victory vs Honor/@comment-7305443-20130404152901

Don't see any problem whatsoever killing a champion that is attacking minions, even if it makes no sense. It's still affecting gameplay.

Knowing or at least heavily guessing they D/C (such as standing still while casting at them), I still would have killed them, maybe even dove a bit for it. A single kill makes things a bit harder for the enemy, yes, but it's no where near game changing until late in the game when a death has a  >45sec res time.

Junglers D/Cing is probably the least punishing anyhow. Like you said, a laner that d/c's won't ever expect their enemy laner to stop CSing. And if they did it would probably mean they're roaming, putting additional pressure on a different (now over-matched) lane. And a jungler d/cing means that when they come back, they just spend more gold on wards to keep from getting attacked while they try to catch back up as opposed to being 3+ levels and 500+ gold behind a champ that they're laning against.