Consider the usefulness for many African Americans who have no idea of their own heritage with it being lost.

Or the corners of families that were shunned for generations that can now be known.

For those who were orphaned and would want to know their roots and possibly find out more.

Lots of people care. For lots of people it's just a curiosity to be ignored.

It's less of an issue in monocultures to be sure, but here it represents something very different and a path to understanding "self" that may not have been there before.

That said, I do know where you're coming from. My family heritage is largely Scottish from my father's side with them emigrating from there in the late 30's. but there's curiosity on my mother's side as part of the family history was lost in a divorce back in the 30's and a side that I have no clue about. And, like a lot of families that have been here for a long time, there's Native American in that history as well that I'm curious about.

BUT

I have no real grand desire to find out. I'm one of a great many that have no real "culture" to lean back into like others do, and sometimes that makes me envious and other times it makes me feel like I couldn't care less because I'm not bound by it. So I get that "who cares" aspect of it.