Until recently, freezing a woman's eggs was reserved mainly for young women facing infertility as a result of cancer treatments like chemotherapy.
But recent advances in technology have made freezing eggs easier and more successful, and likely have a lot to do with the recent decisions by Facebook and Apple to offer female employees a health benefit worth up to $20,000 to freeze their eggs.
The benefit is intended for women who don't need to freeze eggs for medical reasons, but rather as a choice.