*snicker-snort*
God told Adam and Noah to be fruitful and multiply. God never told US to change the world by breeding a lot of little christians. (Besides, from what I have seen that is not very successful as many christian parents' children wind up leaving church as soon as they get old enough to make their own decisions.)
No, we are to be a light in this world but I don't think breeding is the linchpin of the plan.