Heck I'm only over 40. I did a handful of interviews at places where folks who I went to school with also interviewed. I got a lot of "culture" questions. My younger classmates, did not hear the world "culture" in their interviews, ever. It's hard not to be pessimistic and assume "culture" was about age...
edit: I didn't mean to sound like I was trivializing your experience. The "culture fit" is really nasty and sucks for everyone who isn't "the norm".