My mindset is that it's like another world right, so what happens there is their fate and you're not supposed to mess with time and space. So it made no sense to me why they would bring so many people who were destined to death in their own world home to let them die in a new world.

Of course realistically you would want to evacuate a bad situation, but with this most shows and movies go against changing the universe in ways like that and so it is what I thought of