From an anthropological point of view, men-women relationships have always been about children and they providing a valuable tool for social cohesion. Marriage has grown out of that tradition. While most people today view marriage as an emotional commitment borne of love, that is most definitely NOT what it was originally intended for. The trouble is, most people fail to sit down and truly examine what they mean by the terms love, marriage and commitment. Most people get married when they fall in love because it seems like the next logical step. For many it is and it works fine. For others it's a disastrous move.
My parents and grandparents had wonderful marriages. Not without problems, but they were minor and worked through healthily. If you want to hold up role models for the institution of marriage, you could use my family. However, I personally feel this is not the norm. 2 out of 3 marriages fail. Of the third that do not split up, a fair proportion of them will not be happy marriages. Couple this with the fact that 1 in 4 women experience abuse and that's based on reported figures, suggesting that if you take into account controlling, non-violent behaviours as well as un-reported violence, the actual figure is more like half the population living in unhealthy relationships. To me this suggests that well over half the women in this country are miserable in their relationships, married or not. More of them should leave. I don't hold to the old chestnut of staying for the sake of the children, as IMO a happy single parent with good values and a healthy approach to personal responsibility and respect for others brings up a far better child than the child brought up in a house that sees abuse and control, even if it's not physical, because values of personal responsibility and respect for others are never present in a relationship that is inherently unequal.
I think a happy marriage is still the ideal in this country because it is the basis that our whole society is constructed around. In a differently constructed society, it may not be necessary. I also agree with the poster earlier who said that the media have perpetuated the idea of the permanent romance, which is unrealistic. We should view marriage as being hard work sometimes, in the same sense that being a parent is - ie it's worth it because the advantages outweigh the hard work that is sometimes necessary. That said, I would argue that we don't so much give up on marriage too easily as we fall into relationships too easily in the first place.