I think because in nearly all of our cultures around the world, historically there has always been a taboo and "unspoken distaste" for those who divorce. Primarily because when you are married you are choosing your partner for life. When a couple divorced, it may look to family and community that they (couple) just gave up or did not make good/mean the commitment they had promised.
I think obviously we are evolving in our values, but there is still this taboo even today. The difference though is since femininst movements have occured during this century, womens rights have become front bench discussion at political and social tables. It you add to that the acknowledgement and publicity of culturally acceptable, re-occuring or out-of-control domestic violence issues in the modern world, then divorce starts to have a meaningful place in society.
A divorce is still frowned upon, but currently today you will find many more are understanding of why divorces happen and why things don't work out. As long as parents continue to take care of any children then this is what's most important. However, I put to you that even today, divorce or even abondoning commitment can be seen as a selfish act, some families and communities can even be offended by your choice to divorce or end the relationship.
There is an article in the papers only yesterday:
http://www.smh.com.au/news/world/honour-killing-victims-failed-plea/2008/04/03/1206851105848.htmlIn this article, it explains that a girl who was partnered by her family with a man at the age of 17, it did not work, i think it may have even been an abusive marraige, who knows. Anycase, she started a relationship with another man who she fell in love with and its quite obvious she was set to start a new life of her own in happiness.
Her family dissapproved. She went to the police, complained several times she feared for her life as her family were crazy and didnt approve. They shrugged it off.
She ended up being raped and beated in their family home for almost 3 hours. The dad and the uncle were involved.
They then buried her under the house - in a suitcase.
This is in London, UK.
It just shows you, that even though we are in 2008, we are almost as backward as we were in 1688 at times.
Its very sad : (