You don't have yo agree with it but it doesn't hurt to understand it a bit.
No matter what your source of moral authority, it best not be government for government holds no good, just a gun.
Government is designed to protect your rights, moral principles are up to you.
There has also been a great deal scope creep in American governance. It applies to adult citizens that ascribe to our creed only. It does not have any control over children be they school-age or unborn. That is within the purview of the states' police power.