[Junior]

Wouldn't that depend upon the group? Survival takes many forms, not just keeping its members alive. Christianity, as a group, survived by becoming the state religion of Rome. Propogation is also more than just simply having children. It also involves recruiting. Christianity adopted many of the trappings of contemporary pagan religions in order to win converts (Sunday worship comes to mind).

[AndrewC]

Wouldn't that depend upon the group?

Yes, according to your ad hoc definition. Thus, by your definition it was "moral" for certain Teutonics to do certain things to certain Semites. It was for the children.