Bob was human. He was far from perfect. He was an old man with traditional values. He wanted a son he could do old fashioned father-son things with. Christine was not that boy. I'm sure Bob did all he could within his own mind, but he was ill-equipped to deal with the bizarre kid Chris turned out to be, autism or no. If Chris had turned out to be just a nerdy gamer shut-in who didn't socialise, minus the autism, Bob would have disapproved just as much because it's not something he can relate to at all. No doubt Bob was disappointed in Chris, one way or another. I'm sure he loved him regardless, but he just didn't know what to do. He never asked for the level of surrealism he ended up living with. I'm not defending him as such. But he had his achievements in life, and I for one would have actually been interested to pick his brains. I'm sure he had a lot of cool stories that Chris could have listened to, but those games needed playing, damn it.