My first kiddo wasn't gaining weight, so bottle it was. My second kiddo was born with a cleft palate, so special bottle it was. The third and fourth babies were foster kiddos at the time, so no other option occurred to us (though bf is a possibility).

Did you know that there is a network of women who donate breast milk for other people's kiddos? It's amazingly cool. I once learned that a friend from one circle of friends was the donor for the adopted baby of a lady in another circle of friends.