D.D.
I breastfed my first 2 for about a year each. Breastfed my twins for 6 weeks and ended up bottle feeding because I had too much going on running a household with 4 children age 5 and under. Once the twins were on formula it allowed others to help more in their care. Overall my family seemed to work better in the long run.
The interesting thing was they always say that breastfed babies are much healthier. Both the older children had a lot of ear infections and colds. The twins didn't have any of that at all. They did get Fifth disease and chicken pox (thanks to the 5 yr old who brought them home from school) but nothing other than that.