I can't speak for everyone, so I won't try to. My wife is a very supportive and understanding person. She not only tolerates my incessant airplane chatter, but will put down what she's doing to listen. I do the same when she tells me a story or a pet peeve, etc.
What she typically won't do is come along when I fly. I built her an FT Speedster to learn to fly on. We've named it Lilah. I think we did two lessons before she gave up. She did great flying away from herself but got disoriented when flying any other direction. The crashes were non-events that just needed a little hot glue to fix, but she got discouraged and was not interested enough in the activity to pursue it beyond those initial hurdles. We still go to all kinds of airplane museums and airshows (her favorite plane is the B-52) but airplanes just don't excite her like they excite me. And that's okay.
As for liking people more than things... I don't know about that. We're both introverts and not great around people. It's the things that draw us in. We like to look at cars and trains, doll-houses, miniatures, artists at work, motorcycles and planes. People who support those interests, who genuinely are interested in furthering your own curiosity without pressuring you, they make the experience great. People who don't can turn you off of it forever, especially if there's only a passing interest in the first place.
What can I to do to get my wife to like flying RC? Nothing. She's experienced it, she knows what it is and that I love it. I can only make it as inviting for her (or anyone) as possible and let her choose when and if she will take another flight. And I always offer to have her along, because sometimes all it takes is the right invitation at the right time.
Would my wife like a build night party? Maybe. We generally don't like parties, but having a bunch of people around who don't know what they're doing makes the fear of failure just a little less.