I'm the exact same way. I have to consciously try not to interject with a weird fact when someone is talking about something. I like to call myself a human encyclopedia though because I just know a ton of random shit. I don't even remember it all the time, just when someone brings something up and I make a connection. I feel like most people just don't bother to read much or don't get particularly fascinated by something and end up going down rabbit hole after rabbit hole. Glad to know there are others like me though.