[wenebego]

Who are the people committing murder all the time despite being in sound mental being?

[kayodelycaon]

Here's one example: https://en.wikipedia.org/wiki/Honor_killing

The degrees of accepted violence is cultural. Plenty of people kill out of anger but anger does not make one insane. Unless you defined criminal behavior as mental illness.

Also I believe you're misunderstanding what was said, people as a whole, as in humanity, commit all kinds of atrocities. Mental illness is not required to be cruel or callous.

Is every soldier mentally ill simply because they are capable of killing on command?

[sokoloff]

Murder is an unlawful killing. What a soldier does in a declared war is not unlawful (in general, at least when within the rules of engagement).

[wenebego]

I was essentially quoting the person i was replying to

[paulddraper]

When someone does it with sound mental state, it's usually called "killing" and not "murder."

I.e. she shot and killed her attempted rapist.