amitymama, you wrote: "A few people indicated that they thought I would be foolish to risky my baby's health or my chance at having a homebirth merely because I wanted some questions answered with facts, not anecdotes about the girl they knew whose baby died because she didn't have a scan and so-and-so's doctor told her they were best."
You asked for facts. It is a FACT that scans DO detect abnormalities in utero where there were NO OTHER indicators, natural or otherwise, which can and DO lead to life-saving interventions for the baby. You can argue about how low the risk is, the number of false positives, and the unnecessary worry, and the routine manner in which scans are prescribed for low risk women, and how high-handed or uninformed medical professionals can be. And you can call our personal experiences 'anecdotes'. But you cannot argue with that FACT.
I too will support you in any informed decision to refuse scans. I come from a family of doctors, so don't in any way have a rose-coloured view of the medical profession.
My big tip for you - if you want to refuse scans with the least hassle from the health professionals, then ask many many questions, listen and (pretend to) treat their answers with respect (even if you feel like arguing), don't deny that FACT, but say you have considered all risks and your decision is XYZ. In a matter of fact way. They will back off.
I was annoyed that having done extensive research about VBAC and electives, I asked for an elective but none of the midwives or consultants would give me a definite answer whether I would get one until I attended 2 VBAC clinics. At which I did not ask to be persuaded one way or another - I fired off a list of questions which showed I had thought about it a lot, wrote down all the answers. After that, I got my elective and the midwives were supportive. Maybe they wrote something in my notes.
If you did your research, you would be a rarity amongst the mothers-to-be. If if the health professionals can be condescending for this reason, they only want to make sure you know the risks. Does not mean that they are peddling borsch.