Many people are amoral jerks. Bitcoin doesn't change that. It's a good reminder that just because someone works in the bitcoin space, it doesn't automatically make them a good or trustworthy person.

As for your dad, it's understandable that he would get emotional about something that burned you so badly, and it probably negatively impacted his own company as well. All you can do is be humble, but also firm in your knowledge that none of what happened was due to bitcoin itself, but rather due to people behaving poorly (as well as some bad luck). We believe in bitcoin because it's a superior form of money... nothing that happened changes that and over time you will be proven correct and your dad will come around.