Sure, you don't need to spend a lot on a marriage, but the commercialization of the marriage industry, with things like it being "traditional" to spend three months salary on engagement rings and guests practically being encouraged to compete to buy the best, most expensive gift to the happy couple, seems to have combined with the rising cost of living and shaky economy to convince more and more people that marriage falls into the "nice if you can afford it, but not really essential" category. Case in point - of the cousins I mentioned in my earlier post, the only one who is married did so about five years before she had any kids.
So, on the one hand I guess it's kind of a good thing that people are thinking for themselves and refusing to be drawn into this particular consumerist circus, but it's clearly coming at the expense of the traditional family values that the West abided by for hundreds of years.