My mom's sister did a lot of genealogy work on their families. My great-grandpa (grandma's dad) came to America from Italy when he was 3. My grandpa's family traced back to the Mayflower. She did all this pre-internet and DNA kits. She had all the work in the trunk of her car and the car was stolen. They recovered it at some point, but all her work was gone.
My dad's SIL has worked on his family genealogy. Then of course, I have my biological history as well. A great-great-grandfather (on my mom's side) was 100% Native American. Maybe it was just one great. I dunno. I can't remember. ANYWAY... I think it's so so interesting. Lee's aunt (on his mom's side) has traced family back to France. She's even been to France to meet them.