I totally agree with you Vanillachica. My son wouldn't take a bottle until he weaned because we introduced it late. With my daughter we try to give her a bottle (of breastmilk or a tiny bit of formula) at night and she does fine with it. We have been doing this basically since she was born. **The reason we give some formula is so she is used to it, so if I ever need to go somewhere without her she can tolerate formula if there is no breastmilk on hand.