Leftists secretly hate their children since they were usually conceived for one of two reasons;
1. They were an unfortunate side effect of sexual intercourse and said leftist didn't feel like having another abortion.
2. Their biological clock was ticking off the nail on the wall and they had the kid to satiate it's biological desire before going back to their anti-biological lifestyle.
Either way, the end result is that they either feel total ambivalence towards their children (because they are essentially human handbags) or outright hate them for their existence.