Let's reel you back in for a moment. Why do you believe a phrase found in the preamble to the Constitution has more power and credence than the actual text of the Constitution?
That is your misconception. I am stating that our Founding Fathers provided the goals we should strive for whenever we are unsure of which direction public policies should take.
The Constitution spells out which direction public policies should take, for example the second amendment which specifies that individuals can own firearms, and the tenth which specifies that every power not explicitly granted to the federal government is reserved to the states and the people.
Until you resolve the question of what they actually meant by that term, you will always have the greater fallacies.
We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defence, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution for the United States of America.