Because it would have made life SO much easier! mess, milk, grub, am I interacting enough, am I interacting too much, will they ever do this, why do they do that, are they sleeping enough, should they sleep through, to cry or not to cry...
And I look at them now and I barely remember any of the stuff that used to seem so important and they've somehow managed to drag themselves up anyway . And I can only just remember roughly how old they were when they walked! Let alone any of the other stuff!
And I think how hard new parents are on themselves and how much they worry about every little thing, and I wish that there were big signs in maternity hospitals and hv clinics saying "In 10 years, you won't even remember most of this, so don't worry."