Not every parent/child relationship survives into adulthood. For one reason or another, a parent and a child can become estranged or otherwise don't get along. In some cases, parents disinherit their children in an attempt at "tough love" due to an addiction, bad money management skills or disappointment with some aspect of a child's life.
If this happens in your life, you may consider disinheriting your child. This may seem like a logical conclusion to your relationship issues, but before you do it, you may want to consider it carefully.