While we would all like everyone in our families to get along perfectly at all times reality is something different for most people. Many families are comprised of very different types of personalities, and in fact blended families can include individuals who really don't have a whole lot in common.
And even if you have a relatively small family that is close-knit each person simply may not agree about certain courses of action.
This is why it is important to state your wishes about the use of medical procedures if you were to fall into an irreversible terminal condition. The case of Terri Schiavo several years ago underscores the importance of executing a living will.
In addition to this there is the matter of final arrangements. There are a lot of decisions that must be made with regard to your funeral and the handling of your body. Exactly how to proceed can be a matter of debate unless you are very clear about your wishes when you are devising your estate plan.
These are details that can sometimes be overlooked by people who are primarily focused on asset transfers. The best way to make sure that all of your bases are covered is to work with a licensed estate planning lawyer who will guide you through all the details and see to it that nothing gets overlooked.