You seem convinced that rights are born from some intrinsic place rather than a construct of man. So I would ask you where is this intrinsic place, prove it exists and prove rights exist seperate from the interpretation of man. So far you have been stating you opinion, personal philosophy and beliefs in things like self-ownership, but you haven't really demonstrated these are anything more than just your political theory.
"Thus to say that a person is not permitted to own a firearm for self-defense, and carry it at all times, is to say his life is worth nothing." - This statement is a bit unrealistic. There are many things that one can protect his/her life with that we are not allowed to carry around. That does not mean our lives are worthless. If gun control is designed to protect people from gun violence and accidents than it is exactly to protect and honor life. That is the place, I believe, Obama is coming from.
Self-ownership is a self-evident fact of existence.
You generate your thoughts, so they belong to you. You move your limbs, so they belong to you. You choose and make your words, so they belong to you. We recognize this every time we say, "My hair", "My idea", "My body", "My life", or any other of scores of things we use every day. "I trimmed my nails today" is a statement of self-ownership; it recognizes that
you did the trimming of something that is
yours because it is part of you.
Self-ownership is the basis of all human interaction, even of interaction with one's own self -- the basis of mental health is self-ownership. The basis of responsibility is self-ownership. The concept of crime is based on the fact of self-ownership -- it's why we laugh at "The devil made me do it!" and refuse to acknowledge "God told me to" as a positive defense.
Disproving self-ownership would be straightforward: show that you can generate the thoughts in another's head, make someone else's arm move merely because you decide it should, or grow fingernails that belong to you on another person.
There's no such thing as "gun control ... designed to protect people from gun violence and accidents". Gun control never does anything but inflict hardship on the law-abiding while leaving the criminal to do as he pleases. Forbidding ordering guns through the mail has never kept a criminal from getting a gun, banning guns from campus has never kept anyone safe from a gun, refusing to let teachers be armed has condemned students to attack by guns. The so-called "assault weapons" ban didn't keep one criminal from getting any gun he pleased; it was a lie on several levels, because none of those were assault weapons, and none were generally used by criminals -- all it did was employ more people in government, offer more chances for corruption, and cause grief and annoyance for ordinary law-abiding citizens.
Gun locks make it easier for criminals to kill people -- that's documented.
Waiting periods make it easier for criminals to kill people -- that's documented.
Instant checks more often keep law-abiding people from obtaining perfectly legal devices for perfectly legal activities than they do to catch criminals who want a gun -- as Bill Clinton proved thoroughly, when he bragged about how under his administration tens of thousands of felons were allowed to violate the law and walk off free.
It isn't your job to decide how I should protect myself -- because my self is mine, not yours. Such laws all boil down to a simple concept: that people are free to do whatever they please, so long as it's what pleases you.
Otherwise, why did we complain about Bush? Why protest restrictions on free speech? Why care if Rick Warren were made head of the FBI and Fred Phelps were put in charge of Homeland Security? If there's no self-ownership, those things wouldn't matter. If there's no self-ownership, rape isn't a crime.
And if there's no self-ownership, then we get 9/11 all over again, because that day of terror was made possible by people who had been taught to believe that they didn't really own themselves, that they were to behave as though they were sheep, not people. On one flight, a few people realized that their choices lay between actually owning themselves and being someone else's tools -- and they chose self-ownership, which is why they're considered heroes.
And if they'd had a firearm or two among them -- well, if good citizens were actually allowed to exercise their Second Amendment rights, there wouldn't have been any airplanes crashing into the Twin Towers, because people could have actually made their self-ownership stick rather than just being mass for someone else's projectiles.