No, our Founders were far from "paranoid", but learned by bitter experience that the old Articles of Confederation were inadequate for United States needs.
It was not in the least about "may one day", but rather their immediate requirements to deal with such events as Shay's Rebellion and various war debts.
It wasn't "paranoia" which drove them, but bitter experience.
You need to read some more. They stated very clearly they felt the States were going to split and that would be the end of the union.
Stop being so damned juvenile and argumentative.