The actress has been speaking to Esquire about why being a parent didn't appeal to her.
She said, "It's so much more work to have children. To have lives besides your own that you are responsible for - I didn't take that on.
That did make things easier for me.
A baby - that's all day, every day for eighteen years."
She went on to point out that in filming for her new movie Sex Tape she was happy to only be acting the childbirth.
She said, "I found myself in a room in the middle of nowhere Massachusetts at 11:00 at night doing a childbirth scene, and everybody's screaming at one another- Jason, the cameramen, the director.
And me acting like I'm trying to push a basketball out of my vajoon. Crazy sh*t, right?"
It seems, unlike some, she's got no problems with her biological clock ticking away.
She explained, "I like being forty-one. I love it. So much sh*t just falls away.
"Fear, mostly. It's the best age. That's when a woman knows how to work things, or she doesn't care about that anymore.
You just stop being afraid."
Celebrity mums and their babies
CAMERON DIAZ TALKS TO HER VAGINA
CELEBS TURNED LIFESTYLE GURUS
MORE CELEBRITY NEWS