Nuclear arms are bad. But perhaps they are a deterrent, with a catastrophic potential? Catastrophic deaths are due to people, not technology in the majority of cases.
World War 2 (1939-1945) = 40,000,000 to 72,000,000 deaths.
An Shi Rebellion (756-760) = 33,000,000 to 36,000,000 deaths.
Mongol Conquests (1207-1472) = 30,000,000 to 60,000,000 deaths.
Qing dynasty conquest of the Ming Dynasty (1616-1662) = 25,000,000 deaths.
Taiping Rebellion (1851-1864) = 20,000,000 to 30,000,000 deaths.
World War 1 (high estimate includes Spanish flu (1914-1918) = 15,000,000 to 65,000,000 deaths.
Conquests of Timur (1369-1405) = 15,000,000 to 20,000,000 deaths.
Dungan revolt (1862-1877) = 8,000,000 to 12,000,000 deaths.
Russian Civil War (1917-1921) = 5,000,000 to 9,000,000 deaths.
Second Congo War (1998-2003) = 3,800,000 to 5,400,000 deaths.
Napolenoic Wars (1804-1815) = 3,500,000 to 6,500,000 deaths.
Thirty Years' War (1618-1648) = 3,000,000 to 11,500,000 deaths.
Yellow Turban Rebellion (184-205) = 3,000,000 to 7,000,000 deaths.
Deluge (1655-1660) = 3,000,000 to 4,000,000 deaths.
etc, etc, etc. BTW, 6 of these wars were in China only, prior to industrialization with deaths estimated at 109 million to 130 million).
Approximately 40% of the traffic deaths include alcohol.
"The discovery of late Stone Age beer jugs has established the fact that intentionally fermented beverages existed at least as early as the Neolithic period (cir. 10,000 B.C.)." (quoted from Wikipedia).
The 1918 flu pandemic is estimated to have killed 50 million people, with an estimated 500 million infected. Technology can prevent this.
Even though people know that obesity can lead to diabetes, hearth disease, and a malady of diseases... people are too stupid to eat properly. Also, I have been eating at McDonald's since about 1958. I am not obese and pass my physicals easily. I do not eat there 3 times a day.
I grew up in an inner city, lived near the freeway, had asthma (genetic not sociological), and am in good health.
We are a society dependent upon drugs because no one is responsible for their action, or their own happiness. It is not a technology problem, but society who promises to make our life happy.
We can fix/reduce the incarceration of prisoners problem pretty quickly.
I agree that we have a toxic waste problem. But technology can fix a lot of this too. Those who create waste and pollute intentionally should be punished.