My children, Jesse and Sam, are definitely less stressful (in a day-to-day sense) than any children in your house. I can absolutely guarantee it.
They don’t wake me up at nights with endless requests for the toilet or a drink or a cuddle or to banish monsters.
They don’t mess up my stuff, break things, fight with one another or incessantly demand my attention.
They leave me with plenty of time to pursue my own interests, have a shower unmolested and get the shopping done without interruption.
You see, neither of them made it to full term. Neither even made it close.