They still aren't all that interested in this stuff, and on their advice I ended up studying computer engineering instead of physics, but I've still found myself working at one of the other labs with big particle accelerators, as a researcher who can link the computing side with enough of the physics side to work with physicists.

They don't fully understand what I do and don't really care too much about the details, but when they saw pictures of where I worked, they did immediately bring up that I used to go on and on about something that seemed similar, so they at least did understand what I liked.

I guess the closest they get to being interested in theoretical physics is that my Dad, having run through his stash of novels during covid, eventually read my left-behind copy of A Brief History of Time, and occasionally quotes it when he's in the mood to wax philosophical. My Mom instead tries to keep up with my other interest of space exploration/astronomy.