I think we all do craft a certain self-image. I guess the degree that our internal self-image matches the image we project, we perhaps feel really uncomfortable in the world when there is a difference. That can cause a lot of stress or bad feelings about ourselves.
Forgetting is a very good survival mechanism.
Sex and graduation night is a rather common thing in our culture, as a celebration of turning 18 and getting out of school, or just of liberation.
We may spark something or set something in motion in another person's life by something we've done. Perhaps in a car accident we injure someone. Perhaps as a manager, we fire someone. There are a lot of things that could precipitate something negative in another person's life. But does that make us responsible for everything that follows from it? Is there a statute of limitations?
I just don't think it's healthy to only have one pursuit, even if it's a seemingly positive thing. You can do a positive thing to the nth degree, and it turns on you at some point. You become stuck.
In terms of morality, we can be very narrowly focused. So convinced of our point of view and righteousness, and it just doesn't allow for circumstance or other people's points of view. It's very comforting because you don't have to self-reflect, you just are. There's a strain of that in American culture.