The first issue to face is whether there is any hope or expectation that the marriage can be salvaged. The answer to this question lies primarily in the commitment level of you and your spouse. If you or your spouse is unwilling or unable to commit to the marriage, then the marriage will likely end. If your spouse claims to be committed to the marriage, then you need to consider your commitment. In some cases, for example, where you have been subjected to continuing physical abuse, there is general agreement that ending the marriage may be appropriate.
Most cases are less clear cut.
Many people now believe that millions of children in our country have suffered as a result of a casual attitude toward divorce over the last thirty years. Whether you are willing to continue your commitment to the marriage is a personal decision for you to make. The factors to consider include the effect on your children, the transgressions and current attitude of your spouse, your views, religious or otherwise, regarding marriage and commitment, and your history with your spouse. This obviously is not an exhaustive list. Many people make this decision in consultation with a minister, counselor, or other trusted advisor.