How does /p/ manage with people in their lives that don't like photography?

Post your experiences in this thread.

My girlfriend was interested in my cameras at first, seemed to think they were neat and let me shoot her. She had a 35mm slr I taught her to use and bought her film for it. But somehow even the most minute mention of photography seems to annoy her. I fucked up somehow, but honestly can't determine how.
She brings up valid points, how it's the laziest art, how most photos are garbage nobody would ever care about, and I agree but I don't see how that means it isn't worth doing. I do other kinds of art, too, drawing, CAD for machining and circuit boards. She doesn't even do any art herself. I obviously can't tell her she has no leg to stand on, since that wouldn't be productive and I want to get her to like photography again.
It's not that big of a deal for our relationship, but it's been bothering me lately because I've been leaving my cameras behind on our trips.

1. How did I cause her to dislike photography?
2. How can I undo whatever I did.