I get why British folks might care. But, aside from the historical aspect, I've never understood Americans being fascinated by the "royals". Especially since, from what I understand, it's more symbolic than anything else anymore.
My ex-wife's Mom was so fascinated by them that when they were planning our wedding, she rented videos of the Princess Diana wedding and bought magazines with pictures of it to get ideas.
I was like..."you know you're talking champagne and caviar when your daughter's about to marry beer and bbq, right?"