“May we have only Nachas from our children and share many Simchos.”
Serious question if your child got a PHd in cancer research and discovered the cure for cancer, but was Melachel Shabbos and ate treif, Would you get Nachas from them?
At least One Gadol Hadors son did get a PHd while he was not OTD, the Gadols grandchildren are. Do you think he got Nachas from his Son and grandchildren?