why is anybody surprised? if any complex organism has nervous system, this can transfer all kinds of information including pain. it's a clear evolutionary adva

why is anybody surprised? if any complex organism has nervous system, this can transfer all kinds of information including pain. it's a clear evolutionary advantage. we have it, so do other living organisms in one way or another. I wouldn't be surprised if ie ants had some very similar highly unpleasant feedback from their injuries to drive them away from cause of it. are we really that dumb that if we don't hear human voice scream in horror, then we consider that all is good?