It's interesting to see how many admins here don't have children by choice, I am included in that group.  I made the choice early on that having children just isn't for me though I love kids and love my nephews/niece.

There are 9 administrative assistants in my group, I had a 3-month period last year during which 3 of them were out at the same time for maternity leave. Two had children and one adopted a child. But they aren't the only ones who have taken leaves, I've had another that has taken time off twice for surgery, one more more has a surgery coming up and I, myself, took time last month for my own surgery. My boss even allowed me time off when my cat became ill in December and I spent 2 days at the vet with him.

My belief, and thankfully also my boss's/company's belief, is that when you care about employees as people and support them in a healthy balance of work/home, then everyone is happier. They are better (and happier) employees, turnover is lower and there is a positive financial impact.