I am a young mother. I had my son when I was 19, I breast fed him for over a year. I honestly don't think that this is young mother/parent issue. I am an assistant orginizer of two different parent groups, ranging from teens to late 40's, singles, married, etc. so people from all over the specturm. The fact is; many women don't breastfeed anymore. No matter the age, our society really does frown on it, and lots of women for whatever reason choose not to do it. Other than that, what I hear from most women is that it hurts too much when they are feading/or your boobs hurt too much when they are not, or it takes down your sex drive.
A good idea for hospitals to promote breatfeeding is getting a lactation consultant into talk to EVERY women that delevers a baby within the first two days of delevery. Have them talk about the healthy ways it helps the baby, the natural immunities, the great vitamens it gives to the early brain development of the child. Have them physically show the new mother how to breastfeed properly. That can have a HUGE impact on how long the mother breastfeeds. In my opinion, as good as formula is, you can never beat what is made in your body for your baby. They can try to copy it in formula, but I just didnt trust it. You can't duplicate it 100%.
When I first started college my son was six months old, when we had break in lecture I would go in the restroom and pump. I had a cooler that was called the "breastfeeding pack" that I would bring with me. It was small cooler that went over the shoulder, that opened at the top...wasnt big at all. It was real simple.