Have you and your dad talked about this much? It could be he is just afraid of the potential cost (as Miguel'smom said)---my son was caught for something and he is doing OK but it has impacted his life in ways that hurt (for a time limited job options for example...he has worked in the past with kids, loves this, would never do anything to endanger any child but since the charge was drug related he cannot do this work until he is (luckily) able to have this expunged from his record) Then again, you are an adult, married, doing OK and the choice is yours. You don't have to share everything you do with your father. You can build a relationship around other aspects of your life.