Writer I breastfed primarily because the concept was familiar to me and what I'd always assumed I'd do. Luckily I had both good support, and no serious problems.
Which, TBH, is I reckon the driving force behind most people's BF vs FF decision. Studies show as well that the most influential factor is what your friends and family do. So I think it's less that people have strong views about "what women should do" or the health benefits necessarily, but if it seems normal to you to BF then it seems like the normal/natural thing to do. Whereas if it seems more normal to FF then BF might seem like something special, scary, difficult. You might give it a try but ultimately not worry too much if it doesn't work out, or you might not try at all.
The thing is that in this country we are so lucky - we have access to clean water, we have money to pay for formula, the vast majority of people can read, if we don't understand the instructions we have lots of opportunity to ask others for help. We have an understanding of hygiene which is so developed it is almost instinctual, and we have excellent access to medical care, so something like diarrhoea for a baby is nowhere near the death sentence it would be in the developing world. For most babies the common cold is nothing at all to be concerned about.
In short while there are risks to using formula in comparison to breastfeeding, we are a rich nation and because of that those risks are negligible. It is and always will be a perfectly adequate, perfectly valid choice and option in the Western, developed world. So there's no need to attack one another 