Registration of anything is, as others have so eloquently pointed out previously, an accounting/auditing methodology allowing the various governments to receive and record taxes, thus a form of control required to maintain and/or improve it's status quo. Be it birth, real property, misc property, education/work effort, marraige, income or capital gains and finally death, your monies are desired, required and demanded. Basically, we are slaves. Tax-paying slaves with guns, cars, farms, factories, houses and boats. Toys.
We can all discuss the number of angels dancing on the head of a pin, and some delight in doing so, but most here realize that just about every modern form of society requires that darned "social contract" whereby we agree (voluntary or mandatory) to give up something in order to live and work together in some form of order/group as opposed to chaos/anarchy.
Don't got to like it, just got to do it.
I like to imagine a state where no public roads or right of way exist. "Excuse me Mr. v8fbird, may I have permission to cross your property to get to mine... again? Please sir? You want HOW MUCH MONEY THIS TIME? You don't even maintain a decent pathway sir. Ruts, holes, muddy quagmires, fording that creek that washed out three years ago. GOOD LORD MAN, what are you doing with all that money we've been giving you? We just need to go to town once a week, and if you do not agree to give up some form of right of way easement to allow that, I may be forced to take extreme measures as my services are necessary for the good of the community. OH! I see you've got a gun. Is that registered?"
"On me huh? Hmmmm"
I suppose that registration of people and their possessions can be either a good thing or a bad thing, depending on whose Ox is being gored at the moment.
As for hiding behind the words of the Constitution or amended Bill of Rights... GET REAL! If the Executive, Legislative and Judicial branches of our government wipe their collective posteriors using those words, you can pretty well bet they're just meaningless symbols to those in power, yet who swear to defend and uphold them; symbols grasped at by us low-lifes as the end-all be-all, altruistic words of wisdom and promised justice, given to us by great men long ago... and so easily trampled and eviscarated by following opportunistic leaders elected and appointed into office, using monies gleaned from registering everything possible imagined.
For our own good.
(just feeling a little cynical now and then... it comes and it goes)