Have a kid they said. It'll be fun they said.
Two quick addendums to this: First, the backstory on this video reveals that the baby has some skin issues that were flaring up on this particular night. The mom said she doesn't normally sleep with her baby but when the condition gets bad, her presence soothes the child. This was a 6-hour night sped up into 44 seconds.
Second, there are a lot of mothers watching this video who would (A) do anything to go back to these sleepless nights just to be able to hold their precious baby one more time, and (B) did what we're watching here full time for at least a decade of their life – and wouldn't change a single moment.
God bless all of you moms.