You wanna help the planet? Stop having so many children!
That's a pretty bold statement! You think having less kids will help the planet?
There are so many unwanted pregnancies on the planet.
The planet is in need of help that is for sure. But couples having multiple children is normal and they can do as they please.
We need to reduce our population. More people are bad for the Earth.
It is not your place to tell people to have less children. If you are so worried about the Earth, than think of things that will help in other ways.