Which strategy has been more effective at preventing unwanted pregnancies, absolute abstinence or the widespread availability of birth control?

Imagine if birth control was available only by proving to the government you were at high risk for pregnancy, and then only with reliable reporting of use to public health tied to your identity?

I can’t stop thinking about @michaelmina_lab’s empowerment arguments in https://youtu.be/L-RuvUkcyJI. I, for one, believe in empowering citizens to take calculated risks with their health and trusting everyone to be responsible.

Even though education is hard, and some people will let us down. The opposite philosophy seems worse. The responsibility to have and raise a child is a thought-provoking analogy.