In light of this ideal of marriage the separation of a married couple is always seen as something undesirable. People who have been through such a separation know from experience how undesirable separation is. No one should enter into marriage expecting its break down and the consequent separation of the couple. Indeed, thinking like that may even call the validity of the marriage into question. Most people, when they get married, really do believe, or at least hope, that they will live with and love each other for the rest of their lives. This is why, when, for many reasons, things don't work out it is regarded as tragic. Of course, at the time of separation, the separation may indeed be desired and necessary as in cases of domestic violence or infidelity. The Catholic perspective, whilst upholding the ideal on the one hand, nonetheless accepts human failings on the other. In such cases, where, despite support of the community separation is necessary, the Catechism of the Catholic Church states: 'If civil divorce remains the only possible way of ensuring certain legal rights, the care of the children, or the protection of inheritance, it can be tolerated and does not constitute a moral offense.' (CCC Article 2383)