Because apparently you can't read.
That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent of the governed, --That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their Safety and Happiness.
You can lie to yourself, but you aren't fooling anyone with objectivity.
Most lost cause losers recognize the foolishness of your “argument” and at least attempt to proffer some sort of hackneyed justification for rebelling. It’s common to hear them bleating about enduring “tyranny” - even though the south dominated the government for most of the United States’ 70 years.
The Founders recognized the difference between natural law and codified law. None of them accepted the notion of unilateral secession or dissolution “at pleasure”.
That word "destructive" was just as meaningful in 1776 as it is today.
It does not mean, "I have a headache this morning, so you are 'destructive' of my rights."
It does mean a long list of serious abuses which the Declaration itemized, but which were totally absent in 1860, thus making Fire Eater secessions "at pleasure".