Go for ligature/ligation

Are my sentences correct English?

-After reading the story, we are compelled to ask ourselves a question: what is life for? If we know that life is bound to be full of pain(s) and suffering(s), then we might as well not give birth to anyone; probably this is the best way to remove anguish and agony. In fact, the best way to topple an authoritarian government is not by military effort(s), but by universal ligature/ligation (=surgery for prevention of conceiving babies), though this method might take a long time. If a dictator refuses to give freedom of vote to his people, they could threaten not to give birth to the next generation; then every bad system would perish automatically. This might be a joke, but it might not be entirely useless in enlightening us as to what road we have to take in the future.

Thank you.