If it is over populated why should we be concerned with things like wars or suicide? Why is murder a crime? As for imposing your morality on people, do you think abusing babies/children is wrong? The point is that medicine has not yet got to the point where it is 100% correct all the time, so you cannot say "zero chance of survival" because doctors and medics have been wrong before and they will be wrong again. "you want to tell the children they've had since they shouldn't have been allowed to exist?" No idea what you are talking about here.