For every ending point, there must obviously be a start. Divorces do not just happen overnight, in the majority of cases anyway. Spouses come to the decision to dissolve their marriage after some form of turmoil or trauma. There are usually a few common occurrences that contribute to two people deciding to call it quits. Finances or infidelity usually round out the top choices in that a department.
However, there have been studies done that show the underlying reasons for couples divorcing today. The signs are present, but many just do not understand them or know how to adjust to them.