Very true, Dale, but nevertheless, if some new law makes my currently legal property suddenly illegal, I lose some liberty to use said property as I see fit because now I have to be concerned with who may see me using my property, and I have to depend on the LEOs wherever I am to be on my side and choose not to enforce the law. Otherwise, I have to keep my property hidden, in which case, I cannot enjoy using it in complete freedom. When I pass on, my heirs lose value in my estate because I may not be able to legally pass on my property under some of the registration schemes being proposed. Likewise, I may be restricted from selling my property I purchased legally to another if I so choose, because a potential buyer may be deterred from buying illegal property.
So, you see, even if the government, either state or federal, lacks the will or the practical means for enforcement, it can still create many legal hurdles to me or my heirs from enjoying the fruits of my labor - my property.
I may have misinterpreted the point of your post, but I kinda took your position to be "don't worry; despite all the rhetoric, the government can't actually take your guns." If that was your thesis, then I disagree. Ask the people who had their guns confiscated (estimated up to 1200 guns) by the feds in the aftermath of hurricane Katrina. Even potential new laws aren't enforced, they create hassles for us and, in legalese, cause a "chilling effect" that in effect, has some of the same results as actual enforcement.
I'm just glad I live in Texas. Such draconian laws aren't likely to happen on the state level here, at least not in my lifetime. Nevertheless, in the event federal laws make anything I currently own illegal, as the saying goes, "my guns won't be illegal, they'll be 'undocumented.'"