Divorce isn't the only issues inherent to the world of family law, though it is a very common one that has many legal layers to it. There are paternity issues that can come to the forefront, even in the absence of marriage. There are many financial issues that can arise in the wake of a divorce. And if children are involved in a divorce -- or even in the absence of divorce -- then there can be delicate custody and support issues that must be handled.
Having said all of that, divorce is an important issue that usually involves most, if not all, of the issues that are mentioned in the paragraph above. Having a legal representative on your side that has experience handling all of these important issues is vital.