The best birth control is personal wealth, if the planet can only sustain a certain number for long term survival (I would suggest we may have already passed that )
We passed that point a long time ago in the UK,as you will well know.
Glad I am the age I am nearly 65,
because a pint mug will only take a pint , when it over flows things can go out of control.
The U.K ain't seen nothing yet in my opinion!
Thankfully the young ones know no different.