A non-hormonal, reversible and non-toxic male birth control could be a step closer, with scientists successfully targeting a protein that's crucial in making fertile sperm. Knocking this protein out for a period of time would give men control over their protection window, much like oral…
It’s medical ethics, not the Hippocratic Oath. Most doctors swear to an ethical standard. Besides, “first, do no harm” is a bit unhelpful if you’re a surgeon.
Otherwise you’re right, the risks of pregnancy outweigh the side effects of birth control, which is why birth control for women doesn’t have as high a standard for mitigating other consequences.