The right to bear arms is for the purpose of lawfull self-defense, not to "preserve freedom."
From the Washington Post of all places,"
Preventing the United States from starting a professional army, in fact, was the single most important goal of the Second Amendment. It is hard to recapture this fear today, but during the 18th century few boogeymen were as scary as the standing army — an army made up of professional, full-time soldiers.
By the logic of the 18th century, any society with a professional army could never be truly free. The men in charge of that army could order it to attack the citizens themselves, who, unarmed and unorganized, would be unable to fight back. This was why a well-regulated militia was necessary to the security of a free state: To be secure, a society needed to be able to defend itself; to be free, it could not exist merely at the whim of a standing army and its generals."
Perspective | What the Second Amendment really meant to the Founders
And some quotes from the Founders:
“What country can preserve its liberties if their rulers are not warned from time to time that their people preserve the spirit of resistance. Let them take arms.”
– Thomas Jefferson, letter to James Madison, December 20, 1787
“Before a standing army can rule, the people must be disarmed, as they are in almost every country in Europe. The supreme power in America cannot enforce unjust laws by the sword; because the whole body of the people are armed, and constitute a force superior to any band of regular troops.”
– Noah Webster, An Examination of the Leading Principles of the Federal Constitution, October 10, 1787
“The right of the citizens to keep and bear arms has justly been considered, as the palladium of the liberties of a republic; since it offers a strong moral check against the usurpation and arbitrary power of rulers; and will generally, even if these are successful in the first instance, enable the people to resist and triumph over them.”
– Joseph Story, Commentaries on the Constitution of the United States, 1833
“It may be laid down, as a primary position, and the basis of our system, that every citizen who enjoys the protection of a free government, owes not only a proportion of his property, but even of his personal services to the defence of it..." -George Washington, letter to Alexander Hamilton May 2, 1783
Hum, it would seem as though the Founders meant for the 2nd to offer a national defense mechanism while a "standing army" could be raised. So, no, it was not just for self-defense, but for NATIONAL defense as well, hence, freedom.