It is not nuttery to support secession. It is, however, a very adult topic requiring consideration and a proper frame of reference. For the best source of perspective on the matter of overthrowing a lawful government, I recommend the Declaration of Independence. We are not there. We might be on that path, but we aren't there. We might never get there if the growing majority of our countrymen successfully criminalize what the Second Amendment stands for, which, of course, has implications far beyond firearms. Secession is not an answer to a government following its rules in a way we don't like.
Repealing the Second Amendment, if lawfully done, would never be grounds for secession. Moving, perhaps, but not armed insurrection. Acts of tyranny without due process against the general public by the government at large would be a much better case.
If big-government nanny types were truly interested in shutting down talk of secession, they would do so by working for legitimacy in our government, willfully and measurably stopped in its tracks by the boundaries of law.
But that's just me, cheering the legacy of seditious and treasonous colonists.
On the other hand, opposition to the Second Amendment is on a roll. Our detractors can ignore the adult, mature parts of the argument, call us death-mongers and nuts, accelerating progress toward whatever pyrrhic, socialistic triumph they have in mind.
I admit it. My zeal for government based on sound, loving, caring philosophy - in other words, government bound by the chains of the Constitution - makes my arguments meaningless. The power and diversity of newspeak somehow doesn't allow room for me in the debate.