You can see all kinds of countries where birth rates go down as women gain the freedom to exercise family planning. Even women who love babies may need time to recover after a birth and prefer to space things out a bit more than might occur without available birth control. There is not a need to bring government control into this: women will make decisions about birth control in discussion with their partners and considering family finances, safety (are we in a civil war or not?), physical health, and needs of existing children.