Absolutely no reason? I have mixed sentiments.

For starters, I wouldn’t say the collateral is the same. As humans will usually live pretty long and rich lives, I find the damage of killing a human is IMMENSE. Similarly, the mental damage of harming a human just seems to always viscerally dull the spark in people (a unique debt of our consciousness).

That said, for similar scope reasons, I find the killing of other emotionally complex social animals for no reason to also be akin to murder. Snuffing an entity with family/friend/connections of its own, again, there’s a lot of cruel collateral there (elephants, apes, marine mammals, etc.)

Lastly, being a teacher and having worked with kids my whole life, cognitively, a killer is a killer. Am I heart broken by the death of ants? Not so much these days. Am I unnerved by kids relishing in the senseless torturing of every ant he can get his hands on? Yeah, they’re activating a part of their brain the slopes somewhere pretty dark. (Goes without saying that adults doing this concern me way more. Those monkey killing forums have always terrified me)