Breastfeeding is promoted as the best feeding choice for infants by Quebec and international public health organizations. However, more than one out of four couples in Quebec will opt for another mode of infant feeding. This study attempts to describe and understand fathers’ experience of artificially feeding their infant. 28 fathers were interviewed and described three trajectories of decision and their effects upon their role, family life and support from health professionals. Fathers share being subjected to social pressure to breastfeed their infant particularly from health professionals.