Those raising children contribute a lot more to society than the childless. They deserve a lighter tax burden. The government, in a rare fit of clear-sightedness, realizes that families are what make a nation. Families ought to be encouraged.
Plus, from a purely partisan point of view, families tend to make more conservatives. Liberals, thanks to the Roe effect and environmental extremism, are aborting and non-reproducing themselves out of existence.
So, if you are truly conservative, you should whole-heartedly support the family institution in America. Its abandonment of marriage and childrearing that has Europe in the Muslim-dependent mess that its in. That the future youd like for this country?