why don't these woman want children?

Children are not a happy experience. Those that have them are dissatisfied and contemptuous of their own offspring. The children, like their parents are superficial and nasty. The society is based on superficiality and greed. Children require a sacrifice, both in conceiving and raising, which most women refuse to give.

These women don't want to be bothered with children. Montag asks Mrs. Phelps about her children....... she says she doesn’t have any- no one in their right mind would. Mrs. Bowles disagrees. She has children, but they’re away at school nine days out of ten, so fortunately she doesn’t have to see them too often.