We decide the importance we give to things. We decide what is important to us.
We decide if we care about things being a certain way, and if we do care about it and have the possibility to change it, then it's up to us to decide if we are willing to do so.
If we do care about it and cannot change it, then it's up to us to decide if we are willing to try and change it anyway, or if we are willing to accept it as it is.
The concept of "caring about a fictional character" in a book or a movie or a video game or the concept of "caring about the past". Caring about historical characters we have all heard of but have never met, or even caring about the past of our race, our civilization or our religion.
Does it directly affect us to know that our ancestors were enslaved by this or that civilization?
Does it directly affect us that our ancestors did this or that in the name of this or that religion?
Do we hold a grudge at the descendants of said civilization TODAY because of it?
Does it matter to us directly?
Will we let what a group of people we have never met has done to another group of people we have never met dictate how we live our lives? We decide whether we care or not, and that is part of what defines us. It's something we must all think about, and not simply take for granted.
What if I told you that if things had been slightly different, your best friend would have killed you. Would you still consider him your best friend?
Would "what could have been" matter more to you than "what is"?
Wow, that's one hell of philosophy right there.