I think some of the rage comes from our instant lives as we all want it NOW and when it does not come as we think we are entitled to we feel cheated.
I also think stress is cumulative, since changing life styles and profession I have noticed many of the rages are not there but then again I avoid most of them. No traffic no pos co workers no bad clients. There is still financial stuff but much less so. When we reach boiling point most don’t focus on true issue they just lash out at next issue or easy target. I also think head meds are a contributing factor as well as huge financial stresses on most normal people as regardless of government lies we all feel the pinch as ends are harder to meet and income has flat lined at best.
We are hard wired fight or flight, how do you do that in modern world without serious repercussion?