Contraceptives have a proven track record of enhancing the health of women and children, preventing unintended pregnancy, and reducing the need for abortion.
That we have children coming into this world already polluted, at the same time we don't know what the effects of that pollution will be on their mental and physical development, is both bad policy and immorally wrong.
For most women, including women who want to have children, contraception is not an option; it is a basic health care necessity.