k1w1k1d:
I also don't know why a baby monitor is required nowadays?
its piece of mind, when you are out in the lounge watching a tv/movie you can hear them stir/cry, same goes for if your are in your yard or garage etc.
Also means you can talk back to them if your device supports it.
just because it wasn't a thing "back in your day" doesn't mean it doesn't make things easier/less stressful these days.