Hold up there, cowboy. Hawaiian pizza is Canadian cuisine, not American.

You are incredibly naive. Total war between industrialized nations, as happened in WW2, is won or lost on industrial capacity. States literally need to cripple their enemy’s ability and will to wage war, which means destroying industrial production, food production, access to safe water, and civil infrastructure. And that is why there should never be another great power war.

As for the USA’s use of nuclear weapons in Japan, they weren’t used to “win” the war. As you say, the Japanese were effectively beaten. Nukes were used to force an immediate surrender, saving millions of both American and Japanese lives.