There are a lot of legal rights you're forgetting that help marriage along. Mostly about the time of dying but not yet dead. Also, these 'parties' and 'Princess Fantasies' are for the most part becoming cheaper and more moderate. They are often done for the benefit and appeasing of close family, particularly parents. And if you don't want to attend and show support to two people starting out, don't RSVP. It's rather simple. Moreover, women aren't the only ones with a lot of fantasies about their 'big day.' I was surprised to learn this too, but really, what's wrong with wanting to celebrate committing yourself to another person for life? I know a lot of cynicism comes from high divorce rates, but give humanity a chance. Seriously, we hear about the people who get married 5 times and the people who have been married for 50 years, and we don't hear about those who have been faithful for 8. Why? Because it's not a juicy story. But if you don't take them into account, then things get very skewed. I'm curious to know, if marriage wasn't a legal thing and weddings were a thing of the past, and two close friends of your told you they had decided to commit themselves to one another forever, and you remember that when you and your SO did that, that the money you got from so-and-so made all the difference, would you feel more like helping them out? Partially because you're not obligated to?