I'm not a psychologist, but it seems like some women get married with the idea that they're going to change their husband in some major way. Later on, they either figure out that idea was wrong and deal with it, or they leave. One of my friends who got divorced said women get married hoping to change a man and men get married hoping a woman never changes.
I hate to generalize, but in people I know that have problems, this too often seems true. I guess I'm lucky that my wife has dealt with it. I wish she was a beer geek too, but I don't want to change her any more than I want to be changed. At least she likes and drinks good craft beer.
Jeff Rankert is indeed a lucky guy; I can vouch for that first hand.