When I had my first (6 years ago) I also thought formula was as good as breast milk, and nothing, or nobody, told me otherwise. I did breast feed him, through my own choice, but only for a few weeks, until the HV advised me to top up with formula, which at the time firstly I thought HV's knew everything and because I thought formula was as good, it didn't bother me doing so, even though it led to me stopping breast feeding altogether.
DS2, 15 months, was breast fed till 11 months when he stopped wanting to feed.
I must say if I hadn't have found MN by the time DS2 was here, although I did have excellent support to BF once I'd started, I didn't get anything from any part of the NHS to actually get started.
I think whether or not to breast feed is completely down to the mothers choice, and I don't know how much support the NHS could give to start BF without seeming to 'push' it on the mother, or to make her feel guilty for FF, but I think a little bit of education for the benefits of BF could be given before the birth.