The "brood" you refer to is likely the welfare brood, which has nothing to do with the issues being discussed in these threads among Christians.
In fact, its insulting to even suggest that Christians are having children, only to have the government support them. That's ridiculous. That kind of stuff is going on among welfare queens, not the Christians engaging in these debates.
Those that can feed those who they breed I have no objection to. Other than being a burden on the public schools (which their parents contribute to via property taxes anyway).
Subsidizing breeding and banning birth control are a recipe for a true demographic disaster. The other extreme (as seen in Europe) is ALSO causing a demographic meltdown, but that has more to do with social attitudes than birth control in and of itself.