I hear you. I was angry at/about the NICU and my midwife for a long time after Sam was born, and I also felt cheated. It eventually wore off, though I can't say when. Sam has remained on the very low end of the weight chart--he has been in about the 3rd percentile for at least the last year--so it might just be that B is a little guy anyway.

My sister-in-law had her baby around the due date, and she supposedly did not produce enough milk on her own and had to supplement with formula. I don't know if that was real or if it was her pediatrician making stuff up--something she seemed prone to doing--but maybe it is possible that the body doesn't always do it.