Doctors don't have the time or capacity to know their patients well enough to make personalized recommendations in most cases. If you show up with symptoms of X they can recommend Y and will probably ask you whether you have Z which can impact the treatment. But virtually no doctor is going to ring you up proactively and say "hey, I noticed you haven't had a HPV vaccine yet, and I think it might make sense for you because I know this and that about your risk profile".

Doctors are not all knowing, infallible oracles. They are human beings you can have a conversation with about your health. If you think something makes sense for you, you can run it past them. No one is suggesting randomly asking doctors to prescribe random shit.