I think it must be very difficult to have to make that decision. I always wanted babies, since I was in my late teens. Had two in early 20's and one more at 37. When I remarried at 46, I seriously considered one more for a brief moment. (!)

I have a good friend who just turned 50. She never wanted kids all her life, was single but dated a lot and had several long term relationships. She finally got married around 40 and decided she really did want to have a baby. After much trying, it didn't happen and she has mourned that missed opportunity since.

And I know several women who've never had children and very happy about it.

I think it can sometimes be the hardest decision a woman can make.