You guys know that the type of fight that goes like "guys get angry, guys punch each other a few times" aren't always the same as "guys get angry, one guy kills the other"?

I'm not one for hypothesizing based on hunches that look evolutionarily plausible, but, given that for a long time humans lived to 20, 25 years old, consider the types of fights teenagers and kids get into these days. A few punches, somebody (or both people) loses with some bruises, nobody dies, nobody gets seriously hurt.

We're comparing those types of fights with murders here. Apples to oranges.