1) Gasoline is just as explosive as DYNOMITE, its SUPER SUPER dangerous to store. Diesel can be stored very safely for a long time, its not even really flammable hardly, and zero explosive dangers. Also its very dangerous to refill a hot generator with gasoline, diesel is safe enough to pretty much keep it running and refill it on the fly.
2) Gasoline generators usually run at about 6000RPM and are LOUD, Diesel generators run at about ONLY 1500-2000 RPM and are much much more quiet because of it.
3) Gasoline engines are only rated for a life expectancy of hundreds of hours. Diesel generator engines are rated for many thousands and more reliable over that lifetime to boot.
4) When all the gas stations are closed and you can't get anymore (because you were at lease not stupid enough to try and store gasoline on site), you can always steal some diesel from the national guard trucks when they are not looking. :)