Our Founding Fathers obviously understood the frailties of human beings, and created a document designed as best as possible to make our new country better. Yes, we've had some internal bumps in the road....slavery, Civil War, Obama leftism, etc. I agree with ya about the left going too far. But we've always found a way out of it and America eventually winds up stronger than before.
The basic flaw in some of your remarks, is that you seem to think that political discourse is unhealthy. You couldn't be more wrong about that. Political discourse is alive and well, and hopefully will be with us for a long time because that means we are living in a healthy, vibrant, dynamic, growing society.
Political discourse isn't confined to between the parties, it is of course within a party as well. My view is let's work within the Republican Party as best we can, and that way we can accomplish things. We accomplish nothing by dividing our party into two parties, except taking us a step closer to the book 1984 about a far leftist society.
I politically live by the old saying, "I don't agree with a word you say, but I will defend to the death your right to say it." That old saying fundamentally conservative. The problem with the today's left is they don't agree with that. The left basically hates our First Amendment. They try as best they can to stifle and stop free speech, and they'd love to live in a 1984 type of society which Orwell stated the Soviet Union inspired him to write the book. There was no political discourse allowed with Big Brother.
I guess you didn't get the memo. The GOP is already divided, and has been, at least since Goldwater. That schism has been growing with the tendency of the GOP over the last several decades to assume it will get more votes by moving to the middle and dumping the desires of its Conservative base. While, so far, it has held the line on some issues, mainly because to fail invites total revolt, it often has 'compromised' with the Left. Unfortunately, that compromise has not started with the positions of Conservatives, who are repeatedly and summarily thrown under the bus within a week after the votes are counted, but begins with the 'moderate' stance and compromises to the Left. THis has been going on for decades, so much so that is is almost standard for the GOP to fail to make reversals of Leftist policy changes and enactments on the most salient issues, despite years of promising to do so. The ACA is a recent and shining example of such failure, and instead of taking the promised Conservative stance to 'repeal, root and branch', began with a 'moderate' stance to compromise from.
This model ensures that the goals of Conservatives, if even acknowledged, will not only not be met, but are almost always summarily discarded as being "unrealistic" or "the perfect standing in the way of the good", when, in fact, they are nothing more nor less than what was promised.
This rubbish has been SOP in the GOP all my adult life (I have eight great grandchildren), and I, despite my penchant for enduring and misplaced loyalty, am finally done with it. It is obvious the GOP will not change, and continuing to squander time and resources trying to fight the Leftward inertia of such an organization is a losing proposition for a Conservative. Embracing a party which will not let me be heard and which has a history of embracing questionable policy or failing to remove it, is no political voice.
While there are those who will argue that a third party will go unheard, I am already unheard within the GOP. What do I lose? By putting my energy into a Party where I can be heard now, even if only by a few, and into the growth of that Party into something which can be heard by more, while carrying the right message, I hopefully build a foundation that , if not me, others can use to promote the Originalist adherence to the Constitution of these United States, a return to a limited Federal Government, and the restoration of Liberty.