We should be encouraging people to have families and to stay together. Hungry has successfully instituted a tax reduction for families according to the number of children living in the household.
The amount they use for their deductions is $30/month for parents with one child, $55/month for parents with two children and $80/month for parents with three or more children. It may no seem like a lot but it goes a long way for many families over there especially lower income.
Obviously we can come up with our own scaling system of how much of a tax deduction we give, but I think something like this would go a long way into combating the demonization of kids and instead incentivizing them.