I don't know. I really don't know. I really just don't know...
The problem is that if I would have to sacrifice my life for a member of my family or a friend it would probably be some emergency case. In these cases people act accroding to what they feel that very moment. Ofcource I can sy I would but if something like that will happen, I have no idea I would react.
I guess I would go out for my family.
But it is not going to be around forever, realistically, and then I will have none. So I will have nothing to sacrifice for in that sense, as I personally will never have a family.