Perhaps it is because you are aware that the two go hand in hand?
As to the rest of it, it sort of fails the historical test on its face. States have been around since well before Christ. Your disappointment with contemporary geopolitics ("all the violence"), economics ("industrial supply chains ") or whatever other ills you discover in your "modern life" are irrelevant to the question of state formation. Your contention of states creating more violence has also been debunked. Obviously there is more violence with more people. People are violent. On a per capita basis, states reduce violence. There is a rather well known book on this that was somewhat recently published that I strongly suspect you are aware of.
I sympathize with your disappointment. Do try to cheer up. The easiest way is to realize that despite everything, there are few eras where you would actually prefer to live instead. Certainly if you had no control over your social class, precise geographical location, or had up to give or take 100 years of variance baked into your somewhat errant time machine.
If you ran the same algorithm on the present age you would have a better shot at a pleasurable life than most humans could have ever dreamed for most of human history. If you require a citation for this we should probably just agree to disagree. Have a nice day.