Although I happen to agree with you, please understand this logic does not apply to children. You are monkeying around with t in the s domain here. It's just a different ballgame. Everything else you do has a certain limit (you can only train for so long, each episode you binge is 44 mins, you can only reasonably eat your fill, etc.) but kids (especially early on) are like air for the vessel of time - their needs and wants will expand to use every last second and then some. They will cost you mindshare when you are not remotely near them. They will change the way you allocate present and future resources including time. They will never let you completely sleep. Please note that none of these are complaints (except maybe that last one) - these are merely the constraints of this domain.