If every comment you come across accounts for the full spectrum of human and geopolitical variability, they would stop being comments and start being novellas.
It is possible to leave comments that are not novellas and that also are not sweepingly dismissive of underlying reality. All birth control methods have failure rates. None of them promises 100% protection -- except celibacy (assuming no one gets raped), which most married couples are not keen to practice.
I'm curious, if we take the failure rate of responsible protected sex, post-vasectomy sex, etc, for the planet...
... does that even start to contribute to replacing the existing population, or is it a statistical blip? Is this just a dead end you're trying to lead me down?