Possibly an even better example than Robert Aumann is David Kazhdan. Unlike Aumann who attended a yeshiva as a child, Kazhdan grew up in the Soviet Union, and his parents were scholars. While it is hard to know inner workings of someone's family, let alone mind, by all reports Kazhdan's family was not at all religious, and he has become interested in Judaism as an adult. So even the "people had only until a certain age to reject their religious faith" argument doesn't quite work here.
Obviously, there were good "reasons" for his conversion. Ethnic Jews leav... (read more)
Possibly an even better example than Robert Aumann is David Kazhdan. Unlike Aumann who attended a yeshiva as a child, Kazhdan grew up in the Soviet Union, and his parents were scholars. While it is hard to know inner workings of someone's family, let alone mind, by all reports Kazhdan's family was not at all religious, and he has become interested in Judaism as an adult. So even the "people had only until a certain age to reject their religious faith" argument doesn't quite work here.
Obviously, there were good "reasons" for his conversion. Ethnic Jews leav... (read more)