Well, there are some babies who die despite the parents doing everything right. In that case, I think it's completely fair to say that "it's their time". And honestly, if I knew someone who had their baby die, even if it was due to an error on their part, I would still emphasize that it was that baby's time, and focus on how sorry I was for them and how could I help, simply because saying anything else would be needlessly cruel. Honestly, everyone makes mistakes sometimes, and I think each of us have, at some point, made a stupid error that put our child in danger. It's just that most of us have been fortunate enough that the error wasn't fatal. I know when I was in the deepest part of sleep deprivation with one of my kids, I got to the end of a short drive and discovered that my child was in their car seat, but the car seat wasn't correctly hooked into the car. I said a prayer of gratitude that the drive had been safe, and made a mental note to never let that happen again.