Point being... Hiroshima and Nagasaki aren't even the worst thing the allies did in the war... combined Churchill's approved attack on Dresden was still worse... and the alternatives actually look worse.
The only thing they really could of did otherwise is pick different targets in Japan.
The reason they didn't is because they only wanted to drop 1 or 2 atomic bombs. They feared if they hit only military targets it wouldn't compel a surrender... so they choose targets valuable to the Japanese national ego, kill civilians, but also kill as few civilians as possible while achieving those first two objectives.
Hiroshima was an army depot, and it would kill people if they missed the depot part.
Nagasaki, was just bad luck for Nagasaki. Kokura was the second target... but it was foggy.
