Tbh, I used that phrasing specifically because you were snippy about someone else making a claim based on their own experience and I was trying to prod you about the evidence you’re using.

Good point. Yeah, and I was kinda rushing through my replies in general at that point, much of that due to... well.

When people kill each other “for no reason,” there’s often still a reason (though not an excuse)- territory in the case of gang or murder of romantic partners...

Sure, I get it. Thing is, we're talking about species-wide behaviors. Not personal vendettas, and so forth. We naked apes are absolutely captured upon that shizzle, without question.

What I said still holds perfectly true. And--

if we know that other animals kill in scenarios where it hurts them and we don’t actually commonly kill each other for no reason.

Like I said above, animals can be 'excessive killers' for a variety of known, documented reasons. Not to mention, we naked apes absolutely DO commonly kill each other for bullshit reasons, unless perhaps you're a NAZI (etc) apologist...? In which case it's VASTLY more terrible, egregious, and anti-life as we know it.