I can see the problem with bathroom breaks for the female nurses because every break ties up two people. Chicks can only go to the bathroom alone at home. And if they have small kids they can't do that either.
I'm kidding, I have much respect for nurses, they do all the work the medical profession gets credit for. Every time I'm an inpatient I send flowers to the floor nurses when I get home. I'd like to think it brightens their day.