Good question, we can kill other humans and it is legal. We just may not murder them.What qualities make it not OK to kill other humans but OK to kill animals?
I don't think so.If a human lacked one or more of these qualities would it be OK to kill him?
Would you have any moral objections to mentally or technologically superior extraterrestrials coming down and harvesting humans for food?
If so, and you were not a vegetarian, would your objection not be hypocritical?
Yes, I would object and yes my hypocrisy know no bounds.