I wasn't particularly influenced into breastfeeding, it was just something I really wanted to do as I felt it was the best thing for my DD. My DH suffered from severe asthma as a child, as did my father, and I had read that bf might lead to less chance of such illnesses, so I was keen to do it to try and reduce the chances of asthma and allergies for my DD. I was very open-minded though, and took the view that if I was able to bf then that would be great, but that I wouldn't beat myself up about it if I couldn't. I bf for six months, but also mixed it up a bit (formula one feed, bf the next) from around 10 weeks. I found it incredibly frustrating that no health visitor would give me straight advice as to whether mixing the two was a good thing or not. In the end the decision was made for me, I became ill around 10 weeks after my daughter was born and started to give her formula simply so that I could get some rest. She continued to thrive, and I got better. I remain convinced that had I not mixed the two methods I would not have bf my DD as long as I did and met another mum at a baby group who was of the same mind as me - more new mums should be advised about this!
Few of my friends bf for more than a few days, but this didn't influence me. I was bf for about six weeks (early 70s - my younger sister was bf for about three weeks) and my mum says this wasn't unusual for the time - she was surprised that I wanted to continue a long as I did. One friend felt very guilty about having been unable to bf her son despite trying so hard. My sister had problems feeding her second child and two different nurses took her to one side to recommend she formula fed instead. Both asked her not to tell anybody that they had said this as they would otherwise get into trouble for not promoting the "breast is best" message.
I never felt comfortable about bf in public, I'm reasonably large-chested and never got the hang of latching my DD on discreetly, so preferred to express milk and take it out with me, or take formula. The only place I ever bf in public was at my local Surestart centre, where nursing chairs were provided and nobody batted an eyelid if you abandoned an activity to get your baps out! In my very early days I remember being delighted when one of the advisors complimented me on my latching on technique, as during the first 48 hours at the hospital I recall that I thought I would never get the hang of it and felt I was constantly having to call for assistance (the support staff were incredibly patient and showed me a number of techniques until I found one that worked).
Incidentally, my DD suffers from eczema and mild asthma. I guess I'll never know whether she'd have had it worse had I not bf her, or whether it actually made no difference. If I have another child, I would make the same decisions and try to bf for as long as I could. Otherwise, she is now a very healthy, sturdy toddler, but put her next to her friends at nursery and you'd never be able to tell which ones had been bf and which had been fed solely on formula.