Well the sterilization part I can handle because my kids are finally all grown up and out on their own! But I see your point. Also, I’d like to have grandchildren someday so hopefully my children are not affected in that way.
I mentioned sterilization as a possibility because the left will use “climate change” to justify just about anything, and because some on the left are already saying that having children - especially in the affluent West - is a crime against the environment. But I think some sort of chip or implant - for whatever purpose they might claim - is more likely.