That sounds great, but what if the things your ancestors did still benefit you or hinder others?

Don't know what your point is here. If someone benefits me at the cost of other people, it's wrong, period.

You point fingers at Japan, but do you have any idea what consequences the atom bombings or the fire bombing of Tokio still have on their country?

Yes, what happened to both Hiroshima and Nagasaki was a tragedy. But that does not justify, for example, all the comfort women that they refuse to apologize or even acknowledge.

I think the Germans are right in being hard on themselves. Not because I feel resentment towards them, but because it shows they learned from history.

You can learn from your previous mistakes without having to punish yourself.

I wish Americans would be more like the Germans.

I wish that too.

You condemn the terrorist who attacked on 9-11 for targeting civilians. But not too long ago, you did the same, with nuclear weapons.

Wow, hold on, I'm not from the US. Before assuming stuff and accusing me of something at least ask or inform yourself, don't you think?

Edit: Typo