Supernova: I probably wouldn't leave her. Weddings are insanely stressful! Our whole lives we are fed these images and ideas of a fairytale wedding, and we feel like our wedding has to be perfect. Our friends and family pressure us to have a beautiful wedding also and we want to impress them. So much pressure goes onto the bride to not only make her wedding the best day of her life, but also to make it fun and memorable for her guests. It's maddening and if a girl gets overwhelmed, I can certainly understand. I wouldn't blame her at all and I certainly wouldn't leave her.
Squishy: I do agree with Supernova that we are force fed our whole lives about the fairytale wedding, blah, blah, blah, but come on. I would definitely consider leaving anyone who is a bridezilla. I think that it could be a stressful time trying to get everything together, but why be rude and put down the people who care about you the most. A wedding is something that is SUPPOSED to be happening because you love someone, not so you can be superficial and materialistic. I feel that anyone who wasn't a bitch before, and becomes a bridezilla is really showing their true colors. What happens after you get married when something doesn't do your way in other life decisions. I wouldn't leave her outright no, but I would give her a stern talking-to, and if that didn't change anything, you're going to have to find someone else to get married to.
So, what do you think? If your wife-to-be turned into a bridezilla in the midst of planning the wedding, would you consider leaving her?