Yep and ultimately it's a decision you have to make, just like the many other things from conception to parenthood! Do your research though If we don't have information, we have no power and if we don't question these things what chance do we have when our doctors tell us we might need something

A midwife once said this though:

Many women don’t know that it is a blood product and one that often comes from Canada as we don’t have enough from Australia. It is really big business. I attended the launch of the product here in W.A a few years ago and no expense was spared on a dinner for appropriate health professionals..GPs, Obs, Midwives , hospital administrators.

There is nothing mandatory about the new “routine” and many women do not follow it for the above reasons. It really is a big experiment that women are expected to follow because it is seen to be “best”. We really don’t know what will happen when all these women get potentially unnecessary blood products in pregnancy.
And another:

Having done a bit of research on it recently for our birth centre women it seems that only 1.5% of negative women will become isoimmunized during pregnancy. And that figure includes a large proportion who are mismanaged and not given Anti-D when potential sensitizing events occur eg. bleeding, ectopics, abdominal trauma. So the real figure would be much less. It seems total overkill to treat all women for a problem that 98.5% of them won't encounter. The other thing is that Anti-D does cross the placenta and there are no studies on the long term effects on the baby. In Ireland in the 80's (before complete blood screening) there were women who ended up with Hep C through Anti-D. It makes me wonder if in the future they will detect other blood borne diseases which were transmitted via Anti D. Just my thoughts....