In my family, all of the women breastfeed. It was a point of pride for us. I nursed until my daughter was 13 months old. I planned to keep on until she was ready--some of the babies in my family have still nursed until they were a little over 3 years old--but I got sick and had to take medications that made my milk unusable. She got used to formula and a bottle during that time and wouldn't go back to my breast afterward.
My mom told me that when she was nursing, in the 70's, there were diaper services and milk services that women could join. For a reasonably affordable fee, they would supply mothers with breast milk and launder cloth diapers and deliver them weekly.
I wish nursing mothers had that kind of stuff available today. It would be best if women could get together and do this stuff for each other without having to make it prohibitively expensive for even the poorest of mothers, though.