Why did British and American forces bomb Germany day after day?

I do believe it was to quickly ruin their industries, dropping the nukes on Hiroshima and Nagasaki destroyed their largest cities and their storages, costing them a bunch of lives and money in order to repair the damages. And to make them surrender, after the first dropping, Germany still wasn't going to quit because they still had ammo and troops, so US bombed Germany's last supplies.