[somenameforme]

I would not ignore the 20th century here. WW1 and WW2 may have not taken up that many years, but their death tolls and overall impact were tremendous. Millions were also killed in Vietnam and Korea as well. Then there's things most people in the West are not so familiar with like the Indonesian mass killings [1], Nigerian Civil War [2], Chinese Civil War [3], and so on with numerous other major events with millions to tens of millions killed.

I also think it's clear that the reason that we call the Cold War, the Cold War, and not WW3 is because of nuclear weapons. If anything the general trendline seems to be for conflicts of far greater violence, intensity, and instability over time, but this is currently being masked by nuclear weapons among developed nations. Although the current trend of nations picking ever more idiotic 'leaders' is suggestive that even mutually assured destruction will likely give way as a deterrent, sooner or later.

It's a great time to support life becoming multiplanetary!

[1] - https://en.wikipedia.org/wiki/Indonesian_mass_killings_of_19...

[2] - https://en.wikipedia.org/wiki/Nigerian_Civil_War

[3] - https://en.wikipedia.org/wiki/Chinese_Civil_War