Nope. Neither me or my girlfriend cares much about marriage to be honest.
It seems like one of those things that couples are "supposed" to do after they've been together for a long time, but in essence it doesn't really mean anything and you can get the benefits from marriage in other ways as well. We might like giving the party, but we don't need to get married to throw a party so heh.
It's not that I'm against marriage though. If marrying makes people happy then by all means they should get married. I just don't see the appeal.