I think there are many factors that determine how important sex is in a marriage at a particular time. How long people have been married for is an obvious one. I would think it would be more important at the start, specially if you've been one of the people who have waited till being married to lose your virginity. (Did anyone here do that?)
As the marriage progresses there are many other things that crop up.. kids can really put you off having sex ever again sometimes, work can get on top of you and bite into your quality time with your partner and then there's housework and other general chores. I guess there are also different answers on what else can be construde as important in a marriage. Some people might say that money is, or maybe the assets like the house and car, for those of you that have kids, you'd know that they are the ultimate important thing in a marriage.
Reading back through earlier posts, they seem to be more about relationships in general. The original poster asked if sex is the most important part of marriage. I think being married makes it something different than just a relationship when sex is concerned. Much harder to get out of anyway.
