This may just be me, but I really think most people nowadays, even Christians, put more emphasis on the engagement and the wedding ceremony/reception than the actual marriage. So much time, effort, and money seems to be placed on the "the big celebration" that no one is really talking about how to prepare for the 50 years after the wedding...
I knew someone (Christian) who, along with their future spouse, spent about $20,000 on the wedding and honeymoon. The marriage lasted less than two years... as they tried to have kids but found out one of the two would probably not be able to have kids. The one who could promptly left for someone else and now has a whole herd of children.
It's a tough situation all around, I know, but I think it's happening all around us. So many people think marriage is this magical panacea: "I won't be lonely!" "I'll get to have sex!" "I'll have someone to always be with me!!"
But those of us who have been married or in long-term relationships surely know that isn't exactly the whole picture. I think marriage is seen as more of an accomplishment to be checked off a list rather than a serious lifetime commitment. (Seeing as I'm divorced, I certainly am not judging anyone--I used to think marriage would solve my loneliness issues too. WRONG!!)
Oddly enough, the non-Christian world which sees marriage as an option (living together is considered preferable, most seem to think?) is, in some ways, changing the long-held societal pressures to marry as soon as possible. Which has it's good and bad points... But it seems to me that Christians will pressure you much more about getting married than non-Christians will, even if you have your own Godly reasons for waiting.