Risa

I think it fits as a character flaw tbh. Worf has always struggled with his heritage, his parentage, his identity. He had great adoptive human parents, but always wrestled with how to be a good Klingon, and what that even means. It's unsurprising that he isn't sure how to raise a Klingon boy, when he has so many unanswered questions about his own upbringing.