I think it undermines bfing. When newbie was around 2 wks he had a night where he nursed for almost 4 straight hours, off and on the breast, switching sides, screaming when not latched on. I came out of the bedroom and told my dh that I thought we needed to go get some formula cause something was wrong. He said "isn't that expensive? do you still have those coupons that you got?" And, honestly, if we hadn't been dead broke and the coupons had been trashed and I wasn't sooooo determined, I would have sent him out for it. And, honestly, I think it would have been the beginning of the end of our bfing. Instead, I worked through it with the help of you ladies in the bfing forum and we are going strong at almost 10wks.
Now, when those coupons print out I hand them back to the cashier and tell her to pass it along to someone who needs it. My baby is breastfed.