[yesfitz]

The person you're responding to didn't mention "feeling". They made a moral statement. Feelings are something we deal with, morals are something we work to build. Confusing the two will lead to a very confusing life.

Additionally, your examples are passive. A more appropriate comparison would be "Would you not be more sad about killing a human child instead of a cow?" Of course you would be! But what if you didn't have to do either?