jealous of wife and son's success

I read about his struggles with various demons. I was a little girl when he died. But you still shake your head. I knew about his pathetic resentment of his late son, but did not know he was jealous of Shirley as well due to her fame on PF. In an Arsenio Hall clip when David, Danny, and Shirley were guests, Danny mentioned spending time at the Jones household during the show's heyday. David kindly corrected him by saying the Cassidy household. In his words, Jack would have a fit if someone called them "the Jones family".

Boy did David favor his dad as he aged, and sadly the same demons caused him to lose his life in his 60's. in addition Shirley stated the only son Jack really bonded with was Ryan. Shaun and Patrick had issues with him as well.