Even though I do want children myself eventually, I think those doctors are silly for wanting to limit the person from their wishes of no children. It’s bonkers.
“Oh, you want to do any <insert medical thing that is either somewhat reversible or not at all>? Why, we know better than someone who probably has already took years thinking about it!”
Medical gatekeeping is real. It’s annoying. It’s why abortion, fertility treatments (of many kinds), HRT, and so on, all honestly should be way easier to access with the person’s own consent.
They might argue, but what about the regret rate, the 10 people that according to some rag paper regret it for life. And then they promptly ignore that many 100,000s of people actually have been enormously helped by it, and that they won’t magically go away if you make it harder to access – you’ll just make it unsafer for them, because now they rely on trenchcoat abortions, poor surgeries, lack of safe medicine due to deliberate underfunding of training, forbidding life-saving medicine, etc.
We oblige no duty to breed. Instead, we have a plight to make life enjoyable for ourselves and for each other. This goes their way too.