My opinion on Life
1) They all do these ethics or duty for emotions still. The example you mentioned, when a parent punishes his child he does that so he doesn't FEEL bad or guilt that he didn't grow his kid up correctly. He does that to
prevent an even worse feeling in the future.
2) I know about that. Thought about that. But you can't escape from Fate. Whatever you choose, what must happen will happen. People should choose whatever they want to choose and this whole thing i mentioned shouldn't affect their choices.