Genealogy is not for everyone and I respect that but you can’t deny the joys it give a person when they discover new things about their family and about themselves as well as the role their families played in history however much it was.
I have only a mild interest in my ancestors, but it’s a harmless pastime for those care more. Sometimes unexpected connections are found which lead to interesting books.
I wouldn’t deny anyone else any joy they find, wherever they find it.
However, I would probaby mostly be interested if I had an inheritance coming I knew nothing about.
And if I found I were next in line for some throne somewhere I’d probably drop off the grid as fast as I could.