My wife rides and was actually instrumental in getting me back on the bike following a months long hiatus. About three years ago, when I was still doing a lot of riding, I wanted to encourage her to ride with me. I bought her a really nice Trek for $1.8k with the hope that she'd be excited and start riding. It may have gotten 20 miles on it before is literally sat for the next 2.5 years in the garage. During that time I stopped riding. About 6 months ago, and following a year of dieting where she lost 40 lbs, she decided she should start riding. At last she got in to it, seriously. Sometimes it just takes a while for seeds we plant to sprout. The even better thing for me was that it got me motivated to get back on the bike. Now I'm even commuting via bike.

(But, I don't want to discount the potency of my threat to trade my 105 components for her Ultegra components if she didn't start using that bike...)