Having your first kid does too. Of course, you may feel like you REALLY need to unwind when there's a screaming baby taking up all your awake time, but, one thing about being a (responsible) parent is that you always have to be 'on' - meaning you gotta get up reliably when it's time for feeding, routines, and making sure the baby doesn't harm themselves when they're awake. No time for booze, mate!