The way women and men spend their time has changed profoundly over the past century. Women in the developed and, to some extent, the developing world are spending much less time in unpaid household work, especially in tasks like cooking, cleaning, and laundry, and much more time in paid work. Men are doing a little bit less paid work, and perhaps a little bit more household work (Aguiar, Hurst and Karabarbounis).
Being in the paid workforce is not intrinsically superior to, or of greater moral worth than, being a housewife or a stay-at-home parent. But there is one salient difference between unpaid work within the home and paid work: cash. Money can be withdrawn from the household budget and used for one's own personal pleasure. Unpaid work is much harder to convert into the latest phone or an evening out with friends or a new coat.