Suppose there is a society that knows without a doubt it is coming close to dangerous overpopulation. If something is not done, there is no doubt that people will die from lack of resources within a generation. Suppose that society begins a mandatory sterilization program. What is your opinion of such a thing?
What if the society instead made sterilization voluntary and paid people to do it? What if the society targeted the disabled with an ad campaign to convince them to choose sterilization?
What if the society went further and paid people to commit suicide? The money would go to the family, of course. What would you think of that?