This is one of the perks of being a nanny... I get all my kid and baby time in during the day and then get to go home. However, someday I would really really like to have some kids of my own so I'm sure I'll know all about sleepless nights.
There certainly isn't anything more lovely than having a sleeping baby in your arms though. (I get to be a baby's cradle for his afternoon nap everyday. My favorite part of the day for sure!)