It is true that we remember bad behaviors the most but I don't agree with your stance that it comes from wanting to promote it or to ideolize it.
The reason why we know about them is because we have been warned against their deeds in history. In a way it's more of a "don't let history repeat" sort of thing.
Yes, we don't get as much recognition for goods we have done, but if you do something good only for the sake of being remembered then one should question why you would do it in the first place right?
I'm not saying all good deeds come from good intention, but doing something good is not weighed on how memorable the action was.
️ like 5 years🧍