I hate everyone who was mean to Dave. Typical of people to fear and/or blame the victim more than the perpetrator!
This makes you wonder if you really are the person who you think you are if and when you're subjected to such dire circumstances.
Lastly, If you could keep a charade going and dupe everyone, most especially those who are close to you, into believing you are something you're not, then you're a piece of psychological art and that alone is motive enough.